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Antixenosis and Tolerance of Rice Genotypes Against Brown Planthopper

Rice science 2016年第2期23卷 96-103页

作者： Preetinder Singh SARAO jagadaish sanmallappa bentur Rice Section Department of Plant Breeding and Genetics Punjab Agricultural University Ludhiana 141004 India Indian Institute of Rice Research Hyderabad 500030 India

Nine genotypes were evaluated under greenhouse conditions for antixenosis and tolerance against brown planthopper （BPH, Nilaparvata lugens Stal）. In antixenosis studies, proportion of insects settled on a test genotype in relation to the susceptible control TN1 was recorded, with significantly lower proportion of nymphs （55.22%-59.18%）, adult males （60.33%-60.75%）, and adult females （80.56%- 79.26%） settled on RP2068-18-3-5 and Ptb33 in relation to those on TN1. Based on number of feeding sites, the test genotypes were ranked in order from the highest to the lowest as RP2068-18-3-5, Ptb33, MR1523, Rathu Heenati, Sinnasivappu, ARC10550, MO1, INRC3021 and TNI. The order was exactly reverse in terms of fecundity expressed as number of eggs laid per female. In tolerance studies, days to wilt, functional plant loss index and plant dry weight loss to BPH dry weight produced were recorded. RP2068-18-3-5, Rathu Heenati and Ptb33 performed better than the other test genotypes. These results helped in relative quantification of BPH resistance levels in the genotypes. RP2068-18-3-5, a new effective source of BPH resistance, can be used in resistance breeding after tagging of resistant genes/QTLs linked to different parameters of antixenosis and tolerance with selectable molecular markers.

关键词： antixenosis molecular marker Nilaparvata lugens resistance breeding rice tolerance

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Gas chromatography mass spectrometry based metabolic profiling reveals biomarkers involved in rice-gall midge interactions

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Journal of Integrative Plant Biology 2014年第9期56卷 837-848页

作者： Ruchi Agarrwal Jagadish sanmallappa bentur Suresh Nair International Centre for Genetic Engineering and Biotechnology(ICGEB) Directorate of Rice Reearch Agri Biotech Foundation

The Asian rice gall midge（Orseolia oryzae WoodMason） is a serious pest of rice that causes huge loss in *** feeding inside the susceptible host,maggots secrete substances that facilitate the formation of a hollow tube-like structure called gall and prevent panicle *** present investigation was carried out to get an account of biochemical changes occurring in the rice plant upon gall midge *** profiling of host tissues from three rice varieties,namely,TN1,Kavya,and RP2068,exposed to gall midge biotype 1（GMB1）,was carried out using gas chromatography mass spectrometry（GC-MS）.TN1 and GMB1 represented compatible interaction,while Kavya and GMB1 as well as RP2068 and GMB1 represented incompatible *** current study identified several metabolites that could be grouped as resistance,susceptibility,infestation,and host features based on their relative *** may be regarded as biomarkers for insect-plant interaction in general and rice-gall midge interaction in particular.

关键词： Biomarkers gas chromatography mass spectrometry insect-plant interaction metabolic profiling metabolites rice-gall midge interaction

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