Apprehending the potential of BABY BOOM transcription factors to mitigate cotton regeneration and transformation
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YAVUZ et al. Journal of Cotton Research (2020) 3:29 https://doi.org/10.1186/s42397-020-00071-3
REVIEW
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Apprehending the potential of BABY BOOM transcription factors to mitigate cotton regeneration and transformation YAVUZ Caner, TILLABOEVA Shakhnozakhan and BAKHSH Allah*
Abstract Since the advent of transgenic technology, the incorporation of gene(s) encoding traits of economic importance in cotton is being practiced worldwide. However, factors like recalcitrant nature of cotton cultivars, in vitro regeneration via tissue culture (especially via somatic embryogenesis), genotype dependency, long and toilsome protocols impede the pace of development of transgenic cotton. Besides that, types and age of explants, media composition, plant growth regulators and other environmental factors affect in vitro cotton regeneration significantly. The studies of genetic control of in vitro regeneration in plants have elucidated the role of certain transcription factor genes that are induced and expressed during somatic embryogenesis. Among these transcription factors, BABY BOOM (BBM) plays a very important role in signal transduction pathway, leading to cell differentiation and somatic embryos formation. The role of BBM has been established in plant cell proliferation, growth and development even without exogenous growth regulators. This review intends to provide an informative summary of regeneration and transformation problems in cotton and the latest developments in utilization of BBM transcription factors in cotton. We believe that the use of BBM will not only ease cotton genetic improvement but will also accelerate cotton breeding programmes. Keywords: Cotton, Genetic manipulations, Regeneration and transformation, BBM
Background Cotton (Gossypium hirsutum L.) is the most important cash crop and the backbone of textile industry in the world. Globally, cotton is grown in 75 countries/regions and significantly improves the economies of many countries through the provision of fiber, oil, and several other products. The most important products of cotton include garments, gloves, mufflers, bags, socks, jackets, beds, vegetable oil, curtains, bed sheets, and others (Bakhsh et al. 2016; Jabran et al. 2019). Cotton breeders face serious challenges as cotton is heavily infested by a number of sap-sucking and chewing insect pests that causes significant yield losses. Besides * Correspondence: [email protected]; [email protected] Department of Agricutlural Genetic Engineering, Faculty of Agricultural Sciences and Technologies, Nigde Omer Halisdemir University, 51240 Nigde, Turkey
that, bacterial and fungal diseases, salinity and drought regimes also affect cotton yield and yield related traits (reviewed in Bakhsh et al. 2015). The plant breeders have continuosly contributed to the improvement of cotton using conventional as well as modern methods. However, the lack of resistance to pests and diseases in available germplasm halts the developments of new cultivars (Jabran et al. 2019; Khabbazi et al. 2018). Bio
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