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Mutations In Pmr5 Result In Powdery Mildew Resistance And Altered Cell Wall Composition, John P. Vogel, Ted K. Raab, Chris R. Somerville, Shauna C. Somerville
Mutations In Pmr5 Result In Powdery Mildew Resistance And Altered Cell Wall Composition, John P. Vogel, Ted K. Raab, Chris R. Somerville, Shauna C. Somerville
Ted K. Raab
Powdery mildews and other obligate biotrophic pathogens are highly adapted to their hosts and often show limited host ranges. One facet of such host specialization is likely to be penetration of the host cell wall, a major barrier to infection. A mutation in the pmr5 gene rendered Arabidopsis resistant to the powdery mildew species Erysiphe cichoracearum and Erysiphe orontii, but not to the unrelated pathogens Pseudomonas syringae or Peronospora parasitica. PMR5 belongs to a large family of plant-specific genes of unknown function. pmr5-mediated resistance did not require signaling through either the salicylic acid or jasmonic acid/ ethylene defense pathways, suggesting …
Ecological And Agricultural Applications Of Synchrotron Ir Microscopy, Ted K. Raab, John P. Vogel
Ecological And Agricultural Applications Of Synchrotron Ir Microscopy, Ted K. Raab, John P. Vogel
Ted K. Raab
The diffraction-limited spot size of synchrotron-based IR microscopes provides cell-specific, spectrochemical imaging of cleared leaf, stem and root tissues of the model genetic organism Arabidopsis thaliana, and mutant plants created either by T-DNA insertional inactivation or chemical mutagenesis. Spectra in the wavelength region from 6 to 12 microns provide chemical and physical information on the cell wall polysaccharides of mutants lacking particular biosynthetic enzymes (‘‘Cellulose synthase-like’’ genes). In parallel experiments, synchrotron IR microscopy delineates the role of Arabidopsis cell wall enzymes as susceptibility factors to the fungus Erysiphe cichoracearum, a causative agent of powdery mildew disease. Three genes, pmr4, pmr5, …
Harvesting Green Gold: Cultivation Of Betelvine In Sundarban, Ganesh Chandra, R L. Sagar
Harvesting Green Gold: Cultivation Of Betelvine In Sundarban, Ganesh Chandra, R L. Sagar
Ganesh Chandra
Betelvine or Pan (Piper betel L) belongs to the family Piperaceae and is a perennial aromatic creeper grown for its leaves. It is the most important cash crop and its cultivation has already brought a perceptible and conspicuous change in the livelihood security of Sundarban agriculture and its farming population. Betelvine is cultivated in a hut like structure called Boroj which is made of either square or rectangular in shape. Farmers are selling their produce at local markets as well as the distant markets in Midnapore district. The growers are also facing several constraints. The most important constraint is price …
Clonal Propagation Of Dalbergia Sissoo Roxb. By Softwood Nodal Cuttings: Effects Of Genotypes, Application Of Iba And Position Of Cuttings On Shoots, Azamal Husen Dr.
Clonal Propagation Of Dalbergia Sissoo Roxb. By Softwood Nodal Cuttings: Effects Of Genotypes, Application Of Iba And Position Of Cuttings On Shoots, Azamal Husen Dr.
Dr. Azamal Husen
No abstract provided.
Growth Performance Of Datura Innoxia Mill. Under The Stress Of Coal-Smoke Pollution, Azamal Husen, Muhammad Iqbal
Growth Performance Of Datura Innoxia Mill. Under The Stress Of Coal-Smoke Pollution, Azamal Husen, Muhammad Iqbal
Dr. Azamal Husen
One-year-old plants of Datura innoxia growing in natural condition in the Hamdard University campus, New Delhi (normal site) and around the Badarpur thermal power plant, New Delhi (polluted site), were studied and compared for their vegetative growth and pollen viability. The power plant emits 1450 tonnes fly ash and 100 tonnes sulphur dioxide per day. Significant variation was found in plant growth, biomass and pollen viability of the two population. The shoot growth was reduced at the polluted site but the root length, the number of branches and the plant biomass were increased, compared to the control. Pollen viability declined …