Other Plant Sciences Commons^™

Fertility Restoration Of The Sorghum A3 Male-Sterile Cytoplasm Through A Sporophytic Mechanism Derived From Sudangrass, Hoang V. Tang, Jeffrey F. Pedersen, Christine D. Chase, Daryl R. Pring

Department of Agronomy and Horticulture: Faculty Publications

Fertility restoration of sorghum [Sorghum bicolor (L.) Moench] lines carrying the IS1112C (A3 group) male-sterile cytoplasm has been documented as a two-gene gametophytic mechanism involving complementary action of restoring alleles designated Rf3 and Rf4, as derived from IS1112C. Fertility restoration capability has also been reported from sudangrass (S. bicolor subsp. drummondii) populations. We describe characteristics of a fertility restoration system derived from sudangrass, in which male-sterile individuals were observed at high frequency in backcross and F₂-F₃ segregating populations. Segregation analyses were consistent with a sporophytic restoration system involving two complementary genes. Pollen iodine …

Nebline, January 2007

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

UNL College of Ag and Natural Resources Turns Talents into Rewarding Careers
Crop Protection Clinic, Jan. 22
Glyphosate-Resistant Marestail Confirmed in Nebraska
Upcoming Pesticide Applicator Trainings
Rethinking Shelterbelts
Salt Damage to Plants Determining Houseplant Problems
Girdling Roots on Trees
Winter Strategies for Wildlife
Where Do Insects Go in the Winter?
Lifelong Learning in Nutrition
Make-Ahead Frozen Beef “Crumbles” Recipe
Peanut Butter Banana Shake Recipe
Are You a “Lark” or an “Owl”? Cook Ahead Accordingly!
Play “FOOD” Ball Online!
President’s Notes — Alice’s Analysis
Household Hints
FCE News & Events
Teach Your Children Well
10 Ways to Save with Lighting
Strengthening …

Publishing Ltd Whole-Plant Mineral Partitioning Throughout The Life Cycle In Arabidopsis Thaliana Ecotypes Columbia, Landsberg Erecta, Cape Verde Islands, And The Mutant Line Ysl1ysl3, Brian M. Waters, Michael A. Grusak

Department of Agronomy and Horticulture: Faculty Publications

• Minimal information exists on whole-plant dynamics of mineral flow through Arabidopsis thaliana or on the source tissues responsible for mineral export to developing seeds. Understanding these phenomena in a model plant could help in the development of nutritionally enhanced crop cultivars. • A whole-plant partitioning study, using sequential harvests, was conducted to characterize growth and mineral concentrations and contents of rosettes, cauline leaves, stems, immature fruit, mature fruit hulls, and seeds of three WT lines (Col-0, Ler, and Cvi) and one mutant line (Col-0::ysl1ysl3). • Shoot mineral content increased throughout the life cycle for all minerals, although tissue-specific mineral …

A Soybean Transcript Map: Gene Distribution, Haplotype And Single-Nucleotide Polymorphism Analysis, Ik-Young Choi, D. L. Hyten, Lakshmi K. Matukumalli, Qijian Song, Julian M. Chaky, Charles V. Quigley, Kevin Chase, K. Gordon Lark, Robert S. Reiter, Mun-Sup Yoon, Eun-Young Hwang, Seung-In Yi, Nevin D. Young, Randy C. Shoemaker, Curtis P. Van Tassell, James E. Specht, P. B. Cregan

Department of Agronomy and Horticulture: Faculty Publications

The first genetic transcript map of the soybean genome was created by mapping one SNP in each of 1141 genes in one or more of three recombinant inbred line mapping populations, thus providing a picture of the distribution of genic sequences across the mapped portion of the genome. Singlenucleotide polymorphisms (SNPs) were discovered via the resequencing of sequence-tagged sites (STSs) developed from expressed sequence tag (EST) sequence. From an initial set of 9459 polymerase chain reaction primer sets designed to a diverse set of genes, 4240 STSs were amplified and sequenced in each of six diverse soybean genotypes. In the …

Cell Wall Proteome In The Maize Primary Root Elongation Zone. Ii. Region-Specific Changes In Water Soluble And Lightly Ionically Bound Proteins Under Water Deficit1[W][Oa], Jinming Zhu, Sophie Alvarez, Ellen L. Marsh, Mary E. Lenoble, In-Jeong Cho, Mayandi Sivaguru, Sixue Chen, Henry T. Nguyen, Yajun Wu, Daniel P. Schachtman, Robert E. Sharp

Department of Agronomy and Horticulture: Faculty Publications

Previous work on the adaptation of maize (Zea mays) primary roots to water deficit showed that cell elongation is maintained preferentially toward the apex, and that this response involves modification of cell wall extension properties. To gain a comprehensive understanding of how cell wall protein (CWP) composition changes in association with the differential growth responses to water deficit in different regions of the elongation zone, a proteomics approach was used to examine water soluble and loosely ionically bound CWPs. The results revealed major and predominantly region-specific changes in protein profiles between well-watered and water-stressed roots. In total, 152 …

Map Location Of The Rpp1 Locus That Confers Resistance To Soybean Rust In Soybean, D. L. Hyten, G. L. Hartman, R. L. Nelson, R. D. Frederick, V. C. Concibido, J. M. Narvel, P. B. Cregan

Department of Agronomy and Horticulture: Faculty Publications

Soybean rust (SBR), caused by Phakopsora pachyrhizi, was first discovered in North America in 2004 and has the potential to become a major soybean [Glycine max (L.) Merr.] disease in the USA. Currently, four SBR resistance genes have been identifi ed but not mapped on the soybean genetic linkage map. One of these resistance genes is the Rpp1 gene, which is present in the soybean accession PI 200492. The availability of molecular markers associated with Rpp1 will permit marker-assisted selection and expedite the incorporation of this gene into U.S. cultivars. We compared simple sequence repeat (SSR) markers between …

Barcsoysnp23: A Panel Of 23 Selected Snps For Soybean Cultivar Identification, M. S. Yoon, Q.J. Song, I. Y. Choi, James E. Specht, D. L. Hyten, P. B. Cregan

Department of Agronomy and Horticulture: Faculty Publications

This report describes a set of 23 informative SNPs (BARCSoySNP23) distributed on 19 of the 20 soybean linkage groups that can be used for soybean cultivar identification. Selection of the SNPs to include in this set was made based upon the information provided by each SNP for distinguishing a diverse set of soybean genotypes as well as the linkage map position of each SNP. The genotypes included the ancestors of North American cultivars, modern North American cultivars and a group of Korean cultivars. The procedure used to identify this subset of highly informative SNP markers resulted in a significant increase …

Ethylene Involvement In The Regulation Of The H+-Atpase Csha1 Gene And Of The New Isolated Ferric Reductase Csfro1 And Iron Transporter Csirt1 Genes In Cucumber Plants, Brian M. Waters, Carlos Lucena, Francisco J. Romera, Gena G. Jester, April N. Wynn, Carmen L. Rojas, Esteban Alcántara, Rafael Pérez-Vicente

Department of Agronomy and Horticulture: Faculty Publications

In previous works using ethylene inhibitors and precursors, it has been shown that ethylene participates in the regulation of several Fe-deficiency stress responses by Strategy I plants, such as enhanced ferric reductase activity, rhizosphere acidification, and subapical root hair development. Furthermore, recent evidence suggests that ethylene could regulate the expression of both the ferric reductase and the iron transporter genes of Strategy I plants by affecting the FER (or FER-like) transcription factor. Recently, two H⁺-ATPase genes have been isolated from cucumber roots, CsHA1 and CsHA2. CsHA1 is up-regulated under Fe deficiency while CsHA2 is constitutively expressed. In …

Fertility Restoration Of The Sorghum A3 Male-Sterile Cytoplasm Through A Sporophytic Mechanism Derived From Sudangrass, Hoang V. Tang, Jeffrey F. Pedersen, Christine D. Chase, Daryl R. Pring

Department of Agronomy and Horticulture: Faculty Publications

Fertility restoration of sorghum [Sorghum bicolor (L.) Moench] lines carrying the IS1112C (A3 group) male-sterile cytoplasm has been documented as a two-gene gametophytic mechanism involving complementary action of restoring alleles designated Rf3 and Rf4, as derived from IS1112C. Fertility restoration capability has also been reported from sudangrass (S. bicolor subsp. drummondii) populations. We describe characteristics of a fertility restoration system derived from sudangrass, in which male-sterile individuals were observed at high frequency in backcross and F2-F3 segregating populations. Segregation analyses were consistent with a sporophytic restoration system involving two complementary genes. Pollen iodine staining in fertile …

Array-Based Genotyping And Expression Analysis Of Barley Cv. Maythorpe And Golden Promise, Harkamal Walia, Clyde Wilson, Pascal Condamine, Abdelbagi M. Ismail, Jin Xu, Xinping Cui, Timothy J. Close

Department of Agronomy and Horticulture: Faculty Publications

Background: Golden Promise is a salt-tolerant spring barley closely related to Maythorpe. Salt tolerance in Golden Promise has been attributed to a single mutation at the Ari-e locus (on 5H) resulting from irradiation of Maythorpe. Golden Promise accumulates lower shoot Na⁺ compared to Maythorpe when growing under saline conditions. This study focused on elucidating the genetic basis and mechanisms involved in this difference. Results: The level of polymorphism between the two genotypes was explored using the Barley1 GeneChip for single feature polymorphisms (SFPs) and an oligonucleotide pool assay for single nucleotide polymorphisms (SNPs). Polymorphism analyses revealed three haplotype blocks …

Nutrient Use Efficiency: Measurement And Management, Achim Dobermann

Department of Agronomy and Horticulture: Faculty Publications

Mineral fertilizers have sustained world agriculture and thus global population and wealth growth for more than 100 years (Smil, 2001; Stewart et al., 2005). Their contribution to increasing crop yields has spared millions of hectares of natural ecosystems that otherwise would have been converted to agriculture (Balmford et al., 2005). However, lacking, imbalanced, inappropriate or excessive use of nutrients in agricultural systems remains a concern. Nutrient mining is a major cause for low crop yields in parts of the developing world, particularly Africa. In other situations, nutrients such as nitrogen (N) and phosphorus (P) often move beyond the bounds of …

Nebline, November/December 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Extension Offers Guardianship Trainings Mandated By the Nebraska Supreme Court
Guardianships Happen for Variety of Reasons
Pruning Ornamental Plants
Spark Up the Fireplace with Color
Test Nitrogen Levels this Fall, Begin Planning for Spring Fertilization
Free Soybean Cyst Nematode Sample Kits Available
Farming No-Till Increases for Major Nebraska Crops, Better for Environment, Fuel Saved
Computerized Farm Financial Recordkeeping Workshops
Preparing a Thanksgiving Feast Does Not Have to be Difficult!
Monte Cristo Sandwich Recipe
$tretch Your Food Dollar with Healthy Snacks
Time-Saving Kitchen Tools for Holiday Gifts
President’s Notes — Alice’s Analysis
Household Hints: Tips for a Warm, Cozy and Efficient …

Nebline, October 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Seven Steps to a Healthier Habitat in the Home
Reduce Grain Depth to Save Time/Energy When Drying Grain
Don’t Feed Fresh Silage too Soon
Beware of Wood Heating Dangers
Spider Bite or Staph Infection? Diagnosis is Important
Tips to Prevent Recurrent Head Lice Infestations
Keep Out Unwanted Pests
Household Hazardous Waste Collection
Healthy Food in a Hurry!
Awesome Banana Walnut Shake Recipe
“Cook It Quick!” Dishes Out Advice
Drying and Roasting Pumpkin Seeds
The A, B, C’s for a Healthy School
Nutrition Education Program Partners with Salvation Army’s Summer Day Camp
President’s Notes — Alice’s Analysis
Household Hints: Lower Your …

Nebline, September 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

4-H Partners With Lincoln After-School Programs
After-School Youth Participate in County Fair 4-H Activities
Free E-mail Horticulture Newsletter
Storing Vegetables and Fruit
Too Late to Spray Bagworms
Deep Watering in Fall Can Prevent Tree Death
A Clean Garden This Fall Means A Disease-Free Garden Next Spring
Take Precautions To Avoid Serious Injury When Operating ATVs
Stocking Up on MyPyramid- Style After-School Snacks
Fruit Muesli Recipe
$tretch Your Food Dollars with Beans
President’s Notes — Alice’s Analysis
Household Hints: Stain Removal Tips
Fall Maintenance
FCE News & Events
Starting the “New Year” Out Right
Chemical Control of Eastern Redcedar
Eastern Nebraska …

Nebline, August 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Kids Ag Discovery Zone at County Fair is Interactive Experience
Fun Facts About Farm Animals
Predicting the Last Irrigation for Corn, Milo and Soybeans
Effect of Increasing Energy Prices on Irrigation Costs
Fall is the Best Time to Stop Henbit
Pesticide Container Recycling Program
Add Mulches to Landscapes to Protect Plants from Temperature Changes
Water Trees During Drought
Woody Plants Under Stress
Penstemon, a Great Acreage Flower
Don’t Use Black Walnut Shavings for Animal Bedding
Are You Winning the “Fruit & Vegetable Bowl Game?”
Summertime Steak Salad Recipe
Top Ten Reasons to Eat At Home
President’s Notes — Alice’s Analysis …

Sheep Updates 2006 - Part 4, K. G. Geenty, A. A. Swan, A. J. Smith, J. L. Smith, Chris Oldham, R. G. Woodgate, R. A. Love, E. Dobbe, H. M. Hoult, J. Pearson, S. Hill, A. Van Burgel, R. B. Besier, R. Warburton, L. Mathwin, D. Rogers, E. Crossley, Allan Herbert, P. Nichols, Tony Albertsen, Darryl Mcclements, Graeme Martin, Penny Hawken, Caroline Vinoles, Beth Paganoni, Dominique Blanche

Sheep Updates

This session covers seven papers from different authors:

MANAGEMENT

1. Wool and meat traits in Merino flocks in different regions, K.G. Geenty, A.A. Swan, A.J. Smith, J.L. Smith, Sheep CRC and CSIRO Livestock Industries, Armidale

2. Fat score or Condition score? - It all depends on what you want to do! Chris Oldham, Department of Agriculture and Food Western Australia

3. Sheep worm control - the latest for Western Australia, RG Woodgate, RA Love, E Dobbe, HM Hoult, J Pearson, S Hill, A van Burgel and RB Besier, Department of Agriculture and Food Western Australia

PASTURES

4. Rethinking pasture production …

Nebline, July 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Regularly Test Private Well Drinking Water for Safety
Approved Water Testing Laboratories
Nebraska Forest Service Expert Discovers Pine Wilt Treatment
Easier Gardening
Odorous House Ant
Chiggers Not a Health Concern, But Can Make Outdoor Activities Uncomfortable
Ants in the Lawn
Bats Under Porches, Patios
Prepare to Plant Alfalfa in August
Pesticide Container Recycling Program
Apply Manure Before Seeding Alfalfa
UNL Researcher Needs Alfalfa Fields With Pocket Gophers
Planting Vegetables for Fall
Methods of Drying Flowers
Measuring Distance
Caring for Animals When Gone
Spider Mites Common Problem on Trees, Other Plants
$tretch Your Food Dollar with Fruits and Vegetables
Red, White …

Nebline, June 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Bio-Fuels Can Help Bridge Energy Gap: Nebraska in Ideal Position to be Supplier of Biofuels
When to Harvest Bromegrass Hay
Sample Your Hay to Get Accurate Nutrient Analyses
Moving Round Hay Bales Can be Dangerous
Pumping Water for Ponds
Controlling Pests with Home Remedies
What Does Work: Boric Acid and Borates
More Home Remedies Debunked
Protect Stored Winter Clothing from Insect Damage
Getting Past the Nutrition Headlines
Bone Appetit Banana Smoothie Recipe
Walk Nebraska!
President’s Notes — Alice’s Analysis
Household Hints: Storing Summer Swimsuits
FCE News & Events
Summer Energy Saving Tips
Are You Ready for Sun’s Rays?
How White …

Nebline, May 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Bed Bug CSI: Investigating Bed Bug Infestations in Lincoln
2006 Perennial Plant of the Year
Cannas in the Garden
Ornamental Grasses for the Landscape
Can People Treat for Bed Bugs Themselves?
Everything Homeowners Need to Know About Termite Control Workshop, May 18
Controlling Ticks
Spring Cleaning? Take Advantage of Household Hazardous Waste Collections
Building a Bat House
Fertilizing Grass Pastures and Hay Lands
What is an Acre?
Butterfly Gardens
Family Skills and Desires
Control of Perennial Weedy Grasses
Maintaining Your Birch Tree
$tretch Your Food Dollar by $pending $mart
Saucy Pasta & Veggie Frittata Recipe
Calories Expended in Common Physical …

Nebline, April 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Visioning Process Can Help Communities Shape Their Future
Bennet is First in Nebraska to do Visioning Process
Easter Egg-Handling Tips
Lemon Dill Egg Salad Recipe
Have You Tried Kohlrabi
Food Bank Needs Volunteers, Donations
President’s Notes — Alice’s Analysis
Household Hints: Benefits of Disinfecting Household Surfaces
FCE News & Events
Poison Prevention
Tease-Proof Your Child
Acreage Insight Clinic: Horse Nutrition & Management, April 13
Effect of Increasing Energy Prices on Farming Costs
Oats for Extra Pasture, Hay and Silage
Consider Burning Shelled Corn as an Alternative Heating Fuel
Tornado – Will You be Ready?
Financial Resources and Skills
Protect Woody …

Nebline, March 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Nebraska 4-H Summer Camps Provide Ultimate Camping Experience for Youth
All-America Selection Vegetables for 2006
Shamrocks for St. Patrick’s Day
Hints for Starting Transplants
Red Flour Beetles
ewf needs volunteers
Household Hazardous Waste Collections for 2006
Don’t Get Trapped in a Smelly Situation
Pocket Gophers in Your Alfalfa? UNL Wildlife Researcher Needs Your Help!
Collection of Unwanted Pesticides, March 16
Diesel vs. Propane Irrigation Systems
Commercial Pesticide Applicator Training
Worried About the High Cost of Fertilizer?
Pollination Requirements for Tree and Small Fruits
Upcoming Acreage Insights Clinics
Type of Farm Enterprise and Crop(s) Produced
$tretch Your Food Dollar with Canned …

Nebline, February 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Making Nutrition Education a Hands-On Experience for Youth
PUDDING CUP Recipe
PEANUT BUTTER BITES Recipe
YUMMY BUG Recipe
YOGURT PARFAIT Recipe
Private Pesticide Applicator Certification
Dormant Spray for Alfalfa Weeds
Commercial Pesticide Applicator Training
Crop Protection Clinic, Jan. 23
Commercial Pesticide Applicator Training
Boost Profits by at Least $20/ Acre Workshop, Feb. 15
Chemigation Certification Training
Fertilizing Crop Land with Biosolids Workshop, March 9
Dealing with Winter Flies
Beginning Beekeeping 2-Day Workshop
Be My Valentine? Consider these mating curiosities from the insect world...
Amazing Facts... About Honey and Honey bees
Household Hints: Rise and Shine with Clean Bed Linens
President’s …

Nebline, January 2006

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

30 MyPyramid Steps to a Healthier You
Guide to Growing Amaryllis
Winter Care of Houseplants
Managing Dust Mites
Urban Pest Management Conference
You Caught Your Mouse — How About Cleanup?
Beginning Beekeeping 2-Day Workshop
Private Pesticide Applicator Certification
Is Burning Wood an Economically Feasible Option?
Crop Protection Clinic, Jan. 23
Acreage-Tough Plants
The Physical Resources of the Acreage—Part 1
Upcoming Acreage Insights Clinics
Meet the Grain Group
Mock Frozen “Peach” Daiquiri Recipe
Sit Less, Move More!
Low-Cost Indoor Avenues to Fitness
Home Energy Checkup
Household Hints: Cleaning silver by electrolysis
President’s Notes — Janet’s Jargon
FCE News & Events
Rokeby …

Snp-Phage – High Throughput Snp Discovery Pipeline, Lakshmi K. Matukumalli, John J. Grefenstette, David L. Hyten, Ik-Young Choi, Perry B. Cregan, Curt P. Van Tassell

Department of Agronomy and Horticulture: Faculty Publications

Background: Single nucleotide polymorphisms (SNPs) as defined here are single base sequence changes or short insertion/deletions between or within individuals of a given species. As a result of their abundance and the availability of high throughput analysis technologies SNP markers have begun to replace other traditional markers such as restriction fragment length polymorphisms (RFLPs), amplified fragment length polymorphisms (AFLPs) and simple sequence repeats (SSRs or microsatellite) markers for fine mapping and association studies in several species. For SNP discovery from chromatogram data, several bioinformatics programs have to be combined to generate an analysis pipeline. Results have to be stored in …

Evaluation Of The Single Kernel Characterization System (Skcs) For Measurement Of Sorghum Grain Attributes, S. R. Bean, O. K. Chung, M. R. Tuinstra, Jeffrey F. Pedersen, J. Erpelding

Department of Agronomy and Horticulture: Faculty Publications

The single kernel characterization system (SKCS) has been widely used in the wheat industry, and SKCS parameters have been linked to end-use quality in wheat. The SKCS has promise as a tool for evaluating sorghum grain quality. However, the SKCS was designed to analyze wheat, which has a different kernel structure from sorghum. To gain a better understanding of the meaning of SKCS predictions for grain sorghum, individual sorghum grains were measured for length, width, thickness (diameter), and weight by laboratory methods and by the SKCS. SKCS predictions for kernel weight and thickness were highly correlated to laboratory measurements. However, …

Application Of Machine Learning In Snp Discovery, Lakshmi K. Matukumalli, John J. Grefenstette, David L. Hyten, Ik-Young Choi, Perry B. Cregan, Curtis P. Van Tassell

Department of Agronomy and Horticulture: Faculty Publications

Background: Single nucleotide polymorphisms (SNP) constitute more than 90% of the genetic variation, and hence can account for most trait differences among individuals in a given species. Polymorphism detection software PolyBayes and PolyPhred give high false positive SNP predictions even with stringent parameter values. We developed a machine learning (ML) method to augment PolyBayes to improve its prediction accuracy. ML methods have also been successfully applied to other bioinformatics problems in predicting genes, promoters, transcription factor binding sites and protein structures. Results: The ML program C4.5 was applied to a set of features in order to build a SNP classifier …

Chemical Composition And Response To Dilute-Acid Pretreatment And Enzymatic Saccharification Of Alfalfa, Reed Canarygrass, And Switchgrass, Bruce S. Dien, Hans-Joachim G. Jung, Kenneth P. Vogel, Michael D. Casler, Joann F. S. Lamb, Loren Iten, Robert C. Mitchell, Gautum Sarath

Department of Agronomy and Horticulture: Faculty Publications

Alfalfa stems, reed canarygrass, and switchgrass; perennial herbaceous species that have potential as biomass energy crops in temperate regions; were evaluated for their bioconversion potential as energy crops. Each forage species was harvested at two or three maturity stages and analyzed for carbohydrates, lignin, protein, lipid, organic acids, and mineral composition. The biomass samples were also evaluated for sugar yields following pretreatment with dilute sulfuric followed by enzymatic saccharification using a commercial cellulase preparation. Total carbohydrate content of the plants varied from 518 to 655 g kg^-1 dry matter (DM) and cellulose concentration from 209 to 322 g kg …

Mutations In Arabidopsis Yellow Stripe-Like1 And Yellow Stripe-Like3 Reveal Their Roles In Metal Ion Homeostasis And Loading Of Metal Ions In Seeds, Brian M. Waters, Heng-Hsuan Chu, Raymond J. Didonato, Louis A. Roberts, Robynn B. Eisley, Brett Lahner, David E. Salt, Elsbeth L. Walker

Department of Agronomy and Horticulture: Faculty Publications

Here, we describe two members of the Arabidopsis (Arabidopsis thaliana) Yellow Stripe-Like (YSL) family, AtYSL1 and AtYSL3. The YSL1 and YSL3 proteins are members of the oligopeptide transporter family and are predicted to be integral membrane proteins. YSL1 and YSL3 are similar to the maize (Zea mays) YS1 phytosiderophore transporter (ZmYS1) and the AtYSL2 iron (Fe)-nicotianamine transporter, and are predicted to transport metal-nicotianamine complexes into cells. YSL1 and YSL3 mRNAs are expressed in both root and shoot tissues, and both are regulated in response to the Fe status of the plant. β-Glucuronidase reporter expression, driven by …

Soybean Cultivars Resulted From More Recombination Events Than Unselected Lines In The Same Population, T. R. Stefaniak, D. L. Hyten Jr., V. R. Pantalone, A. Klarer, T. W. Pfeiffer

Department of Agronomy and Horticulture: Faculty Publications

The selection of superior adapted cultivars has contributed to the doubling of soybean [Glycine max (L.) Merr.] yields in the USA since 1930. Genetic variation was required for this selection to be effective. The objective of this study was to evaluate the importance of homologous chromosome meiotic recombination in the creation of soybean cultivars. A set of 10 adapted high-yielding cultivars selected from the cross ‘Williams’ × ‘Essex’ was com-pared with a set of 156 random recombinant inbred lines (RILs) from the same population. Crossover events were identified using 143 simple sequence repeat (SSR) markers span-ning all 20 soybean …

Ethylene Could Influence Ferric Reductase, Iron Transporter, And H+-Atpase Gene Expression By Affecting Fer (Or Fer-Like) Gene Activity, Carlos Lucera, Brian M. Waters, Francisco Javier Romera, María José García, María Morales, Esteban Alcántara, Rafael Pérez-Vicente

Department of Agronomy and Horticulture: Faculty Publications

In previous works, it has been shown, by using ethylene inhibitors and precursors, that ethylene could participate in the regulation of the enhanced ferric reductase activity of Fe-deficient Strategy I plants. However, it was not known whether ethylene regulates the ferric reductase gene expression or other aspects related to this activity. This paper is a study of the effects of ethylene inhibitors and precursors on the expression of the genes encoding the ferric reductases and iron transporters of Arabidopsis thaliana (FRO2 and IRT1) and Lycopersicon esculentum (= Solanum lycopersicum) (FRO1 and IRT1) plants. The effects …