Cotton as a Model for Polyploidy and Fiber Development Study

Kamburova, Venera; Salakhutdinov, Ilkhom; Shermatov, Shukhrat E.; Buriev, Zabardast T.; Abdurakhmonov, Ibrokhim Y.

doi:10.5772/intechopen.99568

Cited by 4 publications

(3 citation statements)

References 62 publications

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“…During evolution, gene duplication may have aided plants in adapting to different abiotic stresses ( Panchy, Lehti-Shiu & Shiu, 2016 ). The most important cause of gene family expansion is gene duplication (tandem as well as segmental gene duplication) ( Kamburova et al, 2021 ). Several former studies have shown that tandem and segmental duplications have a major role in the expansion of several plant gene families ( Zhang et al, 2020 ; Zhao et al, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Genomic insights into CKX genes: key players in cotton fibre development and abiotic stress responses

Hamid,

Jacob,

Ghorbanzadeh

et al. 2024

PeerJ

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Cytokinin oxidase/dehydrogenase (CKX), responsible for irreversible cytokinin degradation, also controls plant growth and development and response to abiotic stress. While the CKX gene has been studied in other plants extensively, its function in cotton is still unknown. Therefore, a genome-wide study to identify the CKX gene family in the four cotton species was conducted using transcriptomics, quantitative real-time PCR (qRT-PCR) and bioinformatics. As a result, in G. hirsutum and G. barbadense (the tetraploid cotton species), 87 and 96 CKX genes respectively and 62 genes each in G. arboreum and G. raimondii, were identified. Based on the evolutionary studies, the cotton CKX gene family has been divided into five distinct subfamilies. It was observed that CKX genes in cotton have conserved sequence logos and gene family expansion was due to segmental duplication or whole genome duplication (WGD). Collinearity and multiple synteny studies showed an expansion of gene families during evolution and purifying selection pressure has been exerted. G. hirsutum CKX genes displayed multiple exons/introns, uneven chromosomal distribution, conserved protein motifs, and cis-elements related to growth and stress in their promoter regions. Cis-elements related to resistance, physiological metabolism and hormonal regulation were identified within the promoter regions of the CKX genes. Expression analysis under different stress conditions (cold, heat, drought and salt) revealed different expression patterns in the different tissues. Through virus-induced gene silencing (VIGS), the GhCKX34A gene was found to improve cold resistance by modulating antioxidant-related activity. Since GhCKX29A is highly expressed during fibre development, we hypothesize that the increased expression of GhCKX29A in fibres has significant effects on fibre elongation. Consequently, these results contribute to our understanding of the involvement of GhCKXs in both fibre development and response to abiotic stress.

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Section: Discussionmentioning

confidence: 99%

Genomic insights into CKX genes: key players in cotton fibre development and abiotic stress responses

Hamid,

Jacob,

Ghorbanzadeh

et al. 2024

PeerJ

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“…Furthermore, allopolyploidization (interspecific hybridization) is considered more advantageous in evolution due to its remarkable heterosis effect, including increased biomass, growth rate, fertility, and stress resistance. As a result, tetraploid cultivated cotton species (G. hirsutum and G. barbadense) exhibit higher fiber quality and yield compared to cultivated diploid species (G. arboreum and G. herbaceum) [116]. Allopolyploidy, autopolyploidy, and aneuploidy are the three types of mutations involving chromosome numbers.…”

Section: Advanced Breeding In Cotton (Mutation Breeding)mentioning

confidence: 99%

Genomic Dynamics and Functional Insights under Salt Stress in Gossypium hirsutum L.

Anwar

Ijaz

Ditta

et al. 2023

Genes

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The changing climate is intensifying salt stress globally. Salt stress is a menace to cotton crop quality and yield. The seedling, germination, and emergence phases are more prone to the effects of salt stress than other stages. Higher levels of salt can lead to delayed flowering, a reduced number of fruiting positions, shedding of fruits, decreased boll weight, and yellowing of fiber, all of which have an adverse effect on the yield and quality of the seed cotton. However, sensitivity toward salt stress is dependent on the salt type, cotton growth phase, and genotype. As the threat of salt stress continues to grow, it is crucial to gain a comprehensive understanding of the mechanisms underlying salt tolerance in plants and to identify potential avenues for enhancing the salt tolerance of cotton. The emergence of marker-assisted selection, in conjunction with next-generation sequencing technologies, has streamlined cotton breeding efforts. This review begins by providing an overview of the causes of salt stress in cotton, as well as the underlying theory of salt tolerance. Subsequently, it summarizes the breeding methods that utilize marker-assisted selection, genomic selection, and techniques for identifying elite salt-tolerant markers in wild species or mutated materials. Finally, novel cotton breeding possibilities based on the approaches stated above are presented and debated.

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“…Polyploidization event was first discovered in 1907 and was considered responsible for increasing the number of chromosomes [ 13 ]. The development of plants that change as a result of polyploidization increases their adaptability to adverse conditions and environmental factors [ 14 , 15 ]. Currently, several chemical and gaseous agents are used in research to obtain polyploids.…”

Section: Introductionmentioning

confidence: 99%

Genomic and Cytogenetic Analysis of Synthetic Polyploids between Diploid and Tetraploid Cotton (Gossypium) Species

Khidirov,

Ernazarova,

Rafieva

et al. 2023

Plants

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Cotton (Gossypium spp.) is the most important natural fiber source in the world. The genetic potential of cotton can be successfully and efficiently exploited by identifying and solving the complex fundamental problems of systematics, evolution, and phylogeny, based on interspecific hybridization of cotton. This study describes the results of interspecific hybridization of G. herbaceum L. (A1-genome) and G. mustelinum Miers ex Watt (AD4-genome) species, obtaining fertile hybrids through synthetic polyploidization of otherwise sterile triploid forms with colchicine (C22H25NO6) treatment. The fertile F1C hybrids were produced from five different cross combinations: (1) G. herbaceum subsp. frutescens × G. mustelinum; (2) G. herbaceum subsp. pseudoarboreum × G. mustelinum; (3) G. herbaceum subsp. pseudoarboreum f. harga × G. mustelinum; (4) G. herbaceum subsp. africanum × G. mustelinum; (5) G. herbaceum subsp. euherbaceum (variety A-833) × G. mustelinum. Cytogenetic analysis discovered normal conjugation of bivalent chromosomes in addition to univalent, open, and closed ring-shaped quadrivalent chromosomes at the stage of metaphase I in the F1C and F2C hybrids. The setting of hybrid bolls obtained as a result of these crosses ranged from 13.8–92.2%, the fertility of seeds in hybrid bolls from 9.7–16.3%, and the pollen viability rates from 36.6–63.8%. Two transgressive plants with long fiber of 35.1–37.0 mm and one plant with extra-long fiber of 39.1–41.0 mm were identified in the F2C progeny of G. herbaceum subsp. frutescens × G. mustelinum cross. Phylogenetic analysis with 72 SSR markers that detect genomic changes showed that tetraploid hybrids derived from the G. herbaceum × G. mustelinum were closer to the species G. mustelinum. The G. herbaceum subsp. frutescens was closer to the cultivated form, and its subsp. africanum was closer to the wild form. New knowledge of the interspecific hybridization and synthetic polyploidization was developed for understanding the genetic mechanisms of the evolution of tetraploid cotton during speciation. The synthetic polyploids of cotton obtained in this study would provide beneficial genes for developing new cotton varieties of the G. hirsutum species, with high-quality cotton fiber and strong tolerance to biotic or abiotic stress. In particular, the introduction of these polyploids to conventional and molecular breeding can serve as a bridge of transferring valuable genes related to high-quality fiber and stress tolerance from different cotton species to the new cultivars.

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Cotton as a Model for Polyploidy and Fiber Development Study

Cited by 4 publications

References 62 publications

Genomic insights into CKX genes: key players in cotton fibre development and abiotic stress responses

Genomic insights into CKX genes: key players in cotton fibre development and abiotic stress responses

Genomic Dynamics and Functional Insights under Salt Stress in Gossypium hirsutum L.

Genomic and Cytogenetic Analysis of Synthetic Polyploids between Diploid and Tetraploid Cotton (Gossypium) Species

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