نتایج جستجو برای: melampsora
تعداد نتایج: 211 فیلتر نتایج به سال:
Spatial variation in the frequency and outcome of interspecific interactions is thought to play a central role in shaping geographic patterns of biodiversity. Previous empirical studies and modeling exercises suggest that negative species interactions should occur with greater frequency and intensity in high-quality/low-stress environments. I tested this hypothesis through a four-year epidemiol...
Expression of the fis1 gene from flax (Linum usitatissimum) is induced by a compatible rust (Melampsora lini) infection. Infection of transgenic plants containing a beta-glucuronidase (GUS) reporter gene under the control of the fis1 promoter showed that induction is highly localized to those leaf mesophyll cells within and immediately surrounding rust infection sites. The level of induction re...
Article title: Flavan-3-ols are an Effective Chemical Defense against Rust 1 infection 2 3 Corresponding author: Almuth Hammerbacher, Department of Zoology and Entomology, 4 Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag 5 X20, Hatfield 0028, Pretoria, South Africa, Email: [email protected], Phone: 6 +27 12 460 3934, Fax: +27 12 460...
SUMMARY Thirteen cDNA libraries constructed from small amounts of leaf rust mRNA using optimized methods served as the source for the generation of 25 558 high-quality DNA sequence reads. Five life-cycle stages were sampled: resting urediniospores, urediniospores germinated over water or plant extract, compatible, interactive stages during appressorium or haustorium formation just before sporul...
BACKGROUND AND AIMS Selective feeding by herbivores, especially at the seedling or juvenile phase, has the potential to change plant traits and ultimately the susceptibility of surviving plants to other enemies. Moreover, since hybridization is important to speciation and can lead to introgression of traits between plant species, differential feeding (herbivore-induced mortality) can influence ...
Open-pollinated seed was collected in 1963 from 81 trees in natural stands along the Mississippi River between Clarkscfale and Vicksburg, Mississippi. Twenty-nine of the trees were chosen for outstanding growth and form; the remaining 52 were randomly selected. Seeds were cleaned, then stored at 38° F and 25 percent relative humidity until sown on August 5. They were sown in subirrigated plant ...
Despite their vital contributions to the training of future physicians, many academic teaching hospitals have grown operationally and financially distinct from affiliated medical schools because of divergent missions, contributing to the erosion of clinical training. Some institutions have responded by building hybrid organizations; others by creating large health care networks with variable re...
بررسی جنگل های دست کاشت کاج اِلدار Pinus eldarica Medw. (Pinaceae) در منطقه هزار پیچ گرگان (استان گلستان) در فروردین سال 1391 حاکی از آلودگی برگ های کاج الدار به قارچ مولد زنگ بود. بررسی نمونه ها مشخص نمود که عامل بیماری زنگ به گونه ای از جنس Coleosporium از تیره Coleosporiaceae تعلق داشت. گفتنی است فقط اعضا جنس Coleosporium قادر به ایجاد آلودگی و تول...
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