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Articles 1 - 5 of 5
Full-Text Articles in Microbiology
A Rulebook For Peptide Control Of Legume–Microbe Endosymbioses, Sonali Roy, Lena Maria Müller
A Rulebook For Peptide Control Of Legume–Microbe Endosymbioses, Sonali Roy, Lena Maria Müller
Agricultural and Environmental Sciences Faculty Research
Plants engage in mutually beneficial relationships with microbes, such as arbuscular mycorrhizal fungi or nitrogen-fixing rhizobia, for optimized nutrient acquisition. In return, the microbial symbionts receive photosynthetic carbon from the plant. Both symbioses are regulated by the plant nutrient status, indicating the existence of signaling pathways that allow the host to fine-tune its interactions with the beneficial microbes depending on its nutrient requirements. Peptide hormones coordinate a plethora of developmental and physiological processes and, recently, various peptide families have gained special attention as systemic and local regulators of plant–microbe interactions and nutrient homeostasis. In this review, we identify five 'rules' …
Effects Of Nitrogen Fertilization And Bioenergy Crop Species On Central Tendency And Spatial Heterogeneity Of Soil Glycosidase Activities, Min Yuan, Jianjun Duan, Jianwei Li, Siyang Jian, Lahiru Gamage, Kudjo E. Dzantor, Dafeng Hui, Philip A. Fay
Effects Of Nitrogen Fertilization And Bioenergy Crop Species On Central Tendency And Spatial Heterogeneity Of Soil Glycosidase Activities, Min Yuan, Jianjun Duan, Jianwei Li, Siyang Jian, Lahiru Gamage, Kudjo E. Dzantor, Dafeng Hui, Philip A. Fay
Agricultural and Environmental Sciences Faculty Research
Extracellular glycosidases in soil, produced by microorganisms, act as major agents for decomposing labile soil organic carbon (e.g., cellulose). Soil extracellular glycosidases are significantly affected by nitrogen (N) fertilization but fertilization effects on spatial distributions of soil glycosidases have not been well addressed. Whether the effects of N fertilization vary with bioenergy crop species also remains unclear. Based on a 3-year fertilization experiment in Middle Tennessee, USA, a total of 288 soil samples in topsoil (0–15 cm) were collected from two 15 m2 plots under three fertilization treatments in switchgrass (SG: Panicum virgatum L.) and gamagrass (GG: Tripsacum dactyloides L.) …
Drought-Induced Leaf Proteome Changes In Switchgrass Seedlings, Zhujia Ye, Sasikiran Sangireddy, Ikenna Okekeogbu, Suping Zhou, Chih-Li Yu, Dafeng Hui, Kevin J. Howe, Tara Fish, Theodore W. Thannhauser
Drought-Induced Leaf Proteome Changes In Switchgrass Seedlings, Zhujia Ye, Sasikiran Sangireddy, Ikenna Okekeogbu, Suping Zhou, Chih-Li Yu, Dafeng Hui, Kevin J. Howe, Tara Fish, Theodore W. Thannhauser
Agricultural and Environmental Sciences Faculty Research
Switchgrass (Panicum virgatum) is a perennial crop producing deep roots and thus highly tolerant to soil water deficit conditions. However, seedling establishment in the field is very susceptible to prolonged and periodic drought stress. In this study, a “sandwich” system simulating a gradual water deletion process was developed. Switchgrass seedlings were subjected to a 20-day gradual drought treatment process when soil water tension was increased to 0.05 MPa (moderate drought stress) and leaf physiological properties had expressed significant alteration. Drought-induced changes in leaf proteomes were identified using the isobaric tags for relative and absolute quantitation (iTRAQ) labeling method followed by …
Identification Of Proteins For Salt Tolerance Using A Comparative Proteomics Analysis Of Tomato Accessions With Contrasting Salt Tolerance, Peter Nveawiah-Yoho, Jing Zhou, Marsha Palmer, Roger Sauve, Suping Zhou, Kevin J. Howe, Tara Fish, Theodore W. Thannhauser
Identification Of Proteins For Salt Tolerance Using A Comparative Proteomics Analysis Of Tomato Accessions With Contrasting Salt Tolerance, Peter Nveawiah-Yoho, Jing Zhou, Marsha Palmer, Roger Sauve, Suping Zhou, Kevin J. Howe, Tara Fish, Theodore W. Thannhauser
Agricultural and Environmental Sciences Faculty Research
Tomato (Solanum lycopersicum) has a wide variety of genotypes differing in their responses to salinity. This study was performed to identify salt-induced changes in proteomes that are distinguishable among tomatoes with contrasting salt tolerance. Tomato accessions [LA4133 (a salt-tolerant cherry tomato accession) and ‘Walter’ LA3465 (a salt-susceptible accession)] were subjected to salt treatment (200 mm NaCl) in hydroponic culture. Salt-induced changes in the root proteomes of each tomato accession were identified using the isobaric tags for relative and absolute quantitation (iTRAQ) method. In LA4133, 178 proteins showed significant differences between salt-treated and non-treated control root tissues (P ≤ 0.05); 169 …
Salt-Induced And Salt-Suppressed Proteins In Tomato Leaves, Suping Zhou, Roger Sauve, Tara Fish, Theodore W. Thannhauser
Salt-Induced And Salt-Suppressed Proteins In Tomato Leaves, Suping Zhou, Roger Sauve, Tara Fish, Theodore W. Thannhauser
Agricultural and Environmental Sciences Faculty Research
Tomato (Solanum lycopersicum cv. Money Maker) seedlings at the two-leaf stage were grown in one-half strength Hoagland solution supplemented with 50 mm NaCl for 4 days, with 100 mm NaCl for 4 days, with 150 mm NaCl for 4 days, and with a final concentration 200 mm NaCl for 2 days. Solutions were refreshed every 2 days for treated and untreated seedlings. Non-treated plants were grown in nonamended one-half strength Hoagland solution. Three biological replicates (BR) were included for treated and control experiments. At the end of treatments, the uppermost three newly expanded leaves from all 12 plants in each …