Identification of host plant resistance to silverleaf whitefly in cotton: Implications for breeding

Miyazaki, Junji; Stiller, Warwick N.; Wilson, Lewis

doi:10.1016/j.fcr.2013.08.001

Cited by 30 publications

(26 citation statements)

References 36 publications

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“…The trichomes on each disc were counted using a binocular microscope as described in Miyazaki et al. (, , b). As trichomes can have 1‐5 hairs, the trichomes with one, two, three, four, or five hairs were counted separately.…”

Section: Methodsmentioning

confidence: 99%

“…The discs were taken from areas of the leaf blade near the major veins, as this is where thrips are normally observed to feed. The trichomes on each disc were counted using a binocular microscope as described in Miyazaki et al (2012Miyazaki et al ( , 2013a. As trichomes can have 1-5 hairs, the trichomes with one, two, three, four, or five hairs were counted separately.…”

Section: Morphological Analysismentioning

confidence: 99%

“…We also included another tetraploid cotton species, G. barbadense, in which resistance has been reported against thrips (Zhang et al, 2013). We Resistance to other pests (e.g., mites, whiteflies) Miyazaki et al (2012Miyazaki et al ( , 2013a included the diploid species G. arboreum, G. thurberi, and G. trilobum, as they have been reported to have resistance against other cotton pests (Trapero et al, 2016). We assessed plant resistance over four cotton seasons, from 2010 to 2014, in the field by counting the thrips and measuring the amount of leaf damage and the plant dry weight for each genotype.…”

Section: Introductionmentioning

confidence: 99%

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Sources of plant resistance to thrips: a potential core component in cotton IPM

Miyazaki

Stiller

Wilson

2016

Entomologia Exp Applicata

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Thrips (Thysanoptera: Thripidae) are important pests of seedling cotton and their damage can delay crop maturity and/or reduce yield. Plant resistance to thrips in cotton would reduce the need to treat crops with insecticides for their control. This would support integrated pest management strategies by reducing the risk of selecting insecticide resistance in concomitant pests and of disrupting the natural enemy complex. Traits that reduce thrips abundance in cotton are poorly understood, but dense leaf hairs and high gossypol content are implicated to negatively affect thrips. Furthermore, some diploid cottons are resistant against thrips. Thrips abundance and damage on a range of Gossypium (Malvaceae) genotypes including hairy leaf, smooth leaf (glabrous), okra leaf shape, and diploid species was evaluated over four crop seasons. Thrips were significantly less abundant and they caused less damage on diploid cotton genotypes from Gossypium arboreum L. (BM13H, Roseum A 2 56), Gossypium thurberi Tod. (GOS5310), and Gossypium trilobum (Moc. & Sess. ex DC.) Skov. (GOS5332) than on the standard commercial Gossypium hirsutum L. cv. Sicot 71. There was no significant relationship between thrips abundance or damage and leaf hairiness, leaf hardness, or leaf shape, though conclusions about the value of these traits must be made cautiously as they are confounded across genotypes that differ in a range of traits simultaneously. The diploid cottons had a lower damage per thrips ratio, indicating that they are more tolerant of thrips feeding damage and thus could be valuable sources of host plant resistance to thrips.

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Section: Methodsmentioning

confidence: 99%

Section: Morphological Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sources of plant resistance to thrips: a potential core component in cotton IPM

Miyazaki

Stiller

Wilson

2016

Entomologia Exp Applicata

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“…al. concluded that G. arboreum has same economic benefit as Bt cotton under rain-fed conditions and might also be a valuable option under irrigated conditions [17]. Therefore, a special interest of organic and low-input production lies in the breeding and selection of G. arboreum species with their high adaptive capacity.…”

Section: Potential Of Different Cotton Species and Cultivar Types Formentioning

confidence: 99%

“…This puts organic cotton farmers under severe threat, as they can no longer obtain non-GM cotton seeds on the local markets and are disconnected from breeding progress. We hypothesize that G. arboreum can be a better choice for organic farming as it is known for higher genetic diversity than G. hirsutum [13] better adaptation to low fertile and rain-fed conditions (abiotic stresses) [14], drought and disease resistance [13], sucking pest resistance [9,[15][16][17], salt tolerance [18] and nematode resistance [19].…”

Section: Introductionmentioning

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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Synthetic biology and opportunities within agricultural crops

Sargent

Conaty

Tissue

et al. 2022

J of Sust Agri & Env

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Conventional breeding techniques have been integral to the development of many agronomically important traits in numerous crops. The adoption of modern biotechnology approaches further advanced and refined trait development and introduction beyond the scope possible through conventional breeding. However, crop yields continue to be challenged by abiotic and biotic factors that require the development of traits that are more genetically complex than can be addressed through conventional breeding or traditional genetic engineering. Therefore, more advanced trait development approaches are required to maintain and improve yields and production efficiency, especially as climate change accelerates the incidence of biotic and abiotic challenges to food and fibre crops. Synthetic biology (SynBio) encompasses approaches that design and construct new biological elements (e.g., enzymes, genetic circuits, cells) or redesign existing biological systems to build new and improved functions. SynBio 'upgrades' the potential of genetic engineering, which involves the transfer of single genes from one organism to another. This technology can enable the introduction of multiple genes in a single transgenic event, either derived from a foreign organism or synthetically generated. It can also enable the assembly of novel genomes from the ground up from a set of standardised genetic parts, which can then be transferred into the target cell or organism. New opportunities to advance breeding applications through exploiting SynBio technology include the introduction of new genes of known function, artificially creating genetic variation, topical applications of small RNAs as pesticides and potentially speeding up the production of new cultivars with elite traits. This review will draw upon case studies to demonstrate the potential application of SynBio to improve crop productivity and resistance to various challenges. Here, we outline specific solutions to challenges including fungal diseases, insect pests, heat and drought stress and nutrient acquisition in a range of important crops using the SynBio toolkit.

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Identification of host plant resistance to silverleaf whitefly in cotton: Implications for breeding

Cited by 30 publications

References 36 publications

Sources of plant resistance to thrips: a potential core component in cotton IPM

Sources of plant resistance to thrips: a potential core component in cotton IPM

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

Synthetic biology and opportunities within agricultural crops

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