New Rice for Africa (NERICA) cultivars exhibit different levels of post‐attachment resistance against the parasitic weeds Striga hermonthica and Striga asiatica
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چکیده
منابع مشابه
Genetic variation and host–parasite specificity of Striga resistance and tolerance in rice: the need for predictive breeding
The parasitic weeds Striga asiatica and Striga hermonthica cause devastating yield losses to upland rice in Africa. Little is known about genetic variation in host resistance and tolerance across rice genotypes, in relation to virulence differences across Striga species and ecotypes. Diverse rice genotypes were phenotyped for the above traits in S. asiatica- (Tanzania) and S. hermonthica-infest...
متن کاملHorizontal gene transfer by the parasitic plant Striga hermonthica.
Horizontal gene transfer has been postulated to occur between crops to co-occurring parasitic plants, but empirical evidence has been lacking. We present evidence that an HGT event moved a nuclear monocot gene into the genome of the eudicot parasite witchweed (Striga hermonthica), which infects many grass species in Africa. Analysis of expressed sequence tags revealed that the genome of S. herm...
متن کاملThe WRKY45-Dependent Signaling Pathway Is Required For Resistance against Striga hermonthica Parasitism.
The root hemiparasite witchweed (Striga spp.) is a devastating agricultural pest that causes losses of up to $1 billion US annually in sub-Saharan Africa. Development of resistant crops is one of the cost-effective ways to address this problem. However, the molecular mechanisms underlying resistance are not well understood. To understand molecular events upon Striga spp. infection, we conducted...
متن کاملIdentification of Striga hermonthica-Resistant Upland Rice Varieties in Sudan and Their Resistance Phenotypes
Rice has become a major staple cereal in sub-Saharan Africa. Currently, upland rice cultivation is expanding particularly in rainfed areas where the root parasitic weed Striga hermonthica, a major constraint to cereal production, is endemic. Laboratory, pot, and semi-controlled open air experiments were performed to evaluate resistance of selected rice varieties in Sudan to a resident S. hermon...
متن کاملThe WRKY45-Dependent Signaling Pathway Is Required For Resistance against Striga hermonthica Parasitism1[OPEN]
The root hemiparasite witchweed (Striga spp.) is a devastating agricultural pest that causes losses of up to $1 billion US annually in sub-Saharan Africa. Development of resistant crops is one of the cost-effective ways to address this problem. However, the molecular mechanisms underlying resistance are not well understood. To understand molecular events upon Striga spp. infection, we conducted...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2011
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.2011.03846.x