Genetic variation for leaf trichome density and its association with sucking insect-pests incidence in Asiatic cotton

Grover, Gomti; Kaur, Baljinder; Pathak, Devendra; Kumar, Vijay

doi:10.5958/0975-6906.2016.00055.9

Cited by 11 publications

(9 citation statements)

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“…Similar to this observation, a prior study by Grover et al . ( 2016 ) in desi cotton also correlates young and mature leaf trichome density positively ( r = 0.83*). A higher number of nymphs was recorded on American cotton parent LH 2107 (6.9) in comparison to desi cotton parent LD 491 (2.6).…”

Section: Resultsmentioning

confidence: 88%

“…These results are consistent with the findings of Grover et al . ( 2016 ) and Desai et al . ( 2008 ) in desi cotton.…”

Section: Resultsmentioning

confidence: 97%

“…Higher leaf trichome density has been shown to influence the feeding and reproduction of jassid (Murugesan and Kavitha 2010;Kanher et al 2016). On the other hand, a positive association of leaf trichome density with the whitefly population has been reported in cotton (Nawab et al 2011;Grover et al 2016;Suthar et al 2021).…”

Section: Association Of Leaf Trichome Density With Leafhopper Tolerancementioning

confidence: 97%

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Inheritance and molecular tagging of genes introgressed from Gossypium arboreum to G. hirsutum for leafhopper tolerance

Jindal

Pathak

Pandher

et al. 2022

J Genet

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Cotton cultivation is conquered by transgenic Bt upland cotton hybrids in India. Bt gene does not provide resistance against sucking insect pests. Due to the inherent vulnerability of extant Bt cotton hybrids to sap-sucking insect pests including leafhopper, upland cotton cultivation is seriously threatened by surging populations of these pests. Consistent and extensive screening of upland cotton germplasm over the years has revealed absence of adequate resistance against leafhopper. Here, we report introgression of leafhopper tolerance from a diploid A-genome cotton species, Gossypium arboreum into G . hirsutum . The dominance of leafhopper tolerance was observed over its susceptibility. Genetic analysis revealed that tolerance to leafhopper was inherited in a simple Mendelian fashion and was controlled by two genes, either singly or in combination. Using bulked segregant analysis, two simple-sequence repeat markers, namely NAU 922 and BNL 1705, located on chromosomes A5 and A11 respectively, were tagged with leafhopper tolerance. To the best of our knowledge, this is the first report of molecular tagging of leafhopper tolerance introgressed from G . arboreum into G . hirsutum . A significant negative association was observed between leaf trichome density and leafhopper nymph population.

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Section: Resultsmentioning

confidence: 88%

“…These results are consistent with the findings of Grover et al . ( 2016 ) and Desai et al . ( 2008 ) in desi cotton.…”

Section: Resultsmentioning

confidence: 97%

Section: Association Of Leaf Trichome Density With Leafhopper Tolerancementioning

confidence: 97%

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Inheritance and molecular tagging of genes introgressed from Gossypium arboreum to G. hirsutum for leafhopper tolerance

Jindal

Pathak

Pandher

et al. 2022

J Genet

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“…Similarly, leaf hairiness was linked with increased tolerance to jassids, aphids, and whiteflies, but not to thrips. The benefit of hairy leaves has been described in several studies on sucking pests of cotton [31][32][33]. However, these rank correlations are quite low and, thus, leaf hairiness as indirect parameter for selection towards increased pest resistance will result in low selection efficiency.…”

Section: Indirect Parameters For Selection Of Resistance To Bollworm mentioning

confidence: 99%

Extent of Bollworm and Sucking Pest Damage on Modern and Traditional Cotton Species and Potential for Breeding in Organic Cotton

et al. 2019

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Resistance against cotton bollworm is one of the main arguments for the use of genetically modified (GM) Bt cotton around the globe. The use of GM is prohibited in organic systems and thus the remunerative value of organic cotton cultivation depends on effective bollworm control. In this study, we investigated the extent of bollworm and sucking pest damage in 68 different hybrid and varietal lines of Gossypium hirsutum and varietal lines of G. arboreum at two different locations with contrasting soil fertility and water dynamics. The damage potential of bollworms was assessed from open capsules at two time points. Sucking pests were assessed at three time points using a scoring method. G. arboreum varietal lines and G. hirsutum hybrids were on average significantly more tolerant than G. hirsutum varietal lines to bollworm under fertile and irrigated situations. For sucking pests, the G. arboreum varietal lines were clearly more tolerant than G. hirsutum hybrids and varietal lines. Since, recently, pink bollworm (Pectinophora gossypiella) became resistant against Bt cotton and pressure of sucking pests severely increased, screening of genetic resources and systems-based cotton breeding for bollworm and sucking pest tolerance will improve sustainability of organic and conventional cotton production.

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“…Trichomes have been studied in several dicot species including Brassica spp., field bean Phaseolus cultivars, and soybean ( Glycine max ) ( Levin, 1973 ; Agren and Schemske, 1992 ). Glabrous mutants were found to be unfavorable to whitefly in cotton ( Gossypium arboreum ) and favorable to larvae of a white butterfly and a cabbage fly in Arabidopsis halleri ( Sato and Kudoh, 2015 ; Grover et al, 2016 ). Previous work on the glabrous cotton mutant suggests that a single recessive gene was responsible for absence of trichomes ( Baljinder et al, 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Fine Mapping of Leaf Trichome Density Revealed a 747-kb Region on Chromosome 1 in Cold-Hardy Hybrid Wine Grape Populations

Karn

Cadle‐Davidson

et al. 2021

Front. Plant Sci.

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Segregation for leaf trichome density was observed in a cold-hardy hybrid grape population GE1025 (N = ∼125, MN1264 × MN1246) that was previously used to detect a quantitative trait locus (QTL) underlying foliar phylloxera resistance on chromosome 14. Our hypothesis was that high trichome density was associated with resistance to phylloxera. Existing literature found trichome density QTL on chromosomes 1 and 15 using a hybrid grape population of “Horizon” × Illinois 547-1 and suggested a few candidate genes. To validate the reported QTL and our hypothesis, interval mapping was conducted in GE1025 with previous genotyping-by-sequencing (GBS) single nucleotide polymorphism (SNP) genotype data and phenotypic scores collected using a 0–6 trichome density scale at several leaf positions. Evaluations were done on replicated forced dormant cuttings in 2 years and on field-grown leaves in 1 year. There was no strong relationship between trichome density and phylloxera resistance except for a Pearson’s correlation (r) of about -0.2 between a few trichome density traits and phylloxera severity traits at 2 and 3 weeks after infestation. Two genetic regions were repeatedly detected for multiple trichome density traits: from 10 to 20.7 Mbp (∼10 Mbp) on chromosome 1 for ribbon and simple density traits and from 2.4 to 8.9 Mbp on chromosome 10 for ribbon density traits, explaining 12.1–48.2 and 12.6–27.5% of phenotypic variation, respectively. To fine map, we genotyped a larger population, GE1783 (N = ∼1,023, MN1264 × MN1246), with conserved rhAmpSeq haplotype markers across multiple Vitis species and phenotyped 233 selected potential recombinants. Evaluations were conducted on field-grown leaves in a single year. The QTL for ribbon trichome density on adaxial vein and adaxial leaf and simple density on abaxial vein was fine mapped to 12.63–13.38 Mbp (747 kb) on chromosome 1. We found variations of MN1264 and MN1246 at candidate genes NAC transcription factor 29, EF-hand protein, and MYB140 in this region and three other surrounding candidate genes proposed previously. Even though no strong relationship between foliar phylloxera resistance and trichome density was found, this study validated and fine mapped a major QTL for trichome density using a cold-hardy hybrid grape population and shed light on a few candidate genes that have implications for different breeding programs.

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Genetic variation for leaf trichome density and its association with sucking insect-pests incidence in Asiatic cotton

Cited by 11 publications

References 0 publications

Inheritance and molecular tagging of genes introgressed from Gossypium arboreum to G. hirsutum for leafhopper tolerance

Inheritance and molecular tagging of genes introgressed from Gossypium arboreum to G. hirsutum for leafhopper tolerance

Extent of Bollworm and Sucking Pest Damage on Modern and Traditional Cotton Species and Potential for Breeding in Organic Cotton

Fine Mapping of Leaf Trichome Density Revealed a 747-kb Region on Chromosome 1 in Cold-Hardy Hybrid Wine Grape Populations

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