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Rpivnt1 provides resistance through the mediation of a light responsive guardee in potato

aBIOTECH 2021年第4期2卷 415-418页

作者： suvendu mondal Nuclear Agriculture and Biotechnology Division Bhabha Atomic Research CentreMumbai 400085India

The disease triangle describes the interrelationship among pathogen,host,and environment towards disease prevalence in the *** mechanistic role of environment on NLR-mediated resistance was not known until ***,a comprehensive work revealed that light controls late blight disease reaction in potato caused by the lrish famine pathogen.A specific R gene Rpivnt1 in potato showed dichotomous behavior in disease reaction due to the light-responsive alternate promoter selection of another host gene glycerate 3 kinase(GLYK)during its *** full-length GLYK protein traps the pathogen effector AVRvnt1 into a recognition event which is later sensed by Rpivnt1 in the presence of *** dark,the truncated GLYK protein devoid of its chloroplastic transit peptide could not able to recognize AVRvnt1 and thus resistance get compromised.A possible model for this event is proposed here for ease in understanding.

关键词： Disease resistance Guardee Pathogen effector Programmed cell death R gene Resistosome

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Differential Aphid Colony Establishment in <i>Dolichos lablab</i>Varieties Correlated with Some Plant Specific Factors That Impact on Aphid Fecundity

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American Journal of Plant Sciences 2017年第4期8卷 754-769页

作者： Hossain Ali mondal suvendu Kumar Roy Lakshmi Hijam Moumita Chakraborty Puspendu Dutta Tapan Kumar Hath Department of Genetics and Plant Breeding Uttar Banga Krishi Viswavidyalaya Cooch Behar India Department of Seed Science and Technology Uttar Banga Krishi Viswavidyalaya Cooch Behar India Department of Agricultural Entomology Uttar Banga Krishi Viswavidyalaya Cooch Behar India

Aphid establishes colony in the selective plant parts like vine, leaf petiole, leaflet, inflorescence, and tender fruit in Dolichos lablab Linn but not the entire plant. In this study, the aphid colony establishment in vine is focused to understand the differential resistance response between two varieties. At the early stage of aphid infestation, the aphid colony establishment was significantly different between two genotypes (p value = 0.00) and abbreviated as “resistant” variety that supported lower aphid proliferation (mean value = 48.2 ± 2.2) and “susceptible” variety that supported comparatively higher aphid proliferation (mean value = 215.5 ± 16.9). The total aphid number was significantly different between the two varieties, realized at the early infestation stage when both “antixenosis” and “antibiosis” defense mechanisms were working on. Some plant specific factors like vine diameter, wet/ dry weight ratio of vine, phloem sap pressure, the compactness of the vine, wet/dry weight ratio of leaflet, length of leaf petiole, diameter of leaflet vein were identified as modulating factors. The impact of resistant variety on aphid was also investigated for better understanding of aphid defense mechanism.

关键词： Dolichos lablab Aphid Colony Differential Vine Diameter Differential Wet/Dry Weight Ratio of Vine Differential Phloem Pressure Differential Compactness of the Vine Differential Aphid Fecundity Differential Water Content in Aphid

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