Gene Expression Correlation Analysis Reveals MYC-NAC Regulatory Network in Cotton Pigment Gland Development

Cheng, Hongyan; Xu, Feng; Zuo, Dongyun; Zhang, Youping; Wang, Qiaolian; Lv, Limin; Wu, Chaofeng; Li, Shuyan; Dai, Yuanli; Qu, Da; He, Man; Shang, Liyan; Song, Guoli

doi:10.3390/ijms22095007

Cited by 4 publications

(1 citation statement)

References 71 publications

(112 reference statements)

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“…Overexpression of cotton GhNAC072 enhances drought and salt stress tolerance in transgenic Arabidopsis [25]. There are a total of 299 NAC genes in the cotton genome [26]. Nevertheless, the functions of most are still unclear, thereby necessitating further investigation.…”

Section: Introductionmentioning

confidence: 99%

The Functions of an NAC Transcription Factor, GhNAC2-A06, in Cotton Response to Drought Stress

Saimi,

Wang,

Liusui

et al. 2023

Plants

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Drought stress imposes severe constraints on crop growth and yield. The NAC transcription factors (TF) play a pivotal role in regulating plant stress responses. However, the biological functions and regulatory mechanisms of many cotton NACs have not been explored. In this study, we report the cloning and characterization of GhNAC2-A06, a gene encoding a typical cotton NAC TF. The expression of GhNAC2-A06 was induced by PEG treatment, drought stress, and ABA treatment. Furthermore, we investigated its function using the virus-induced gene silencing (VIGS) method. GhNAC2-A06 silenced plants exhibited a poorer growth status under drought stress conditions compared to the controls. The GhNAC2-A06 silenced cotton plants had a lower leaf relative water and chlorophyll content and a higher MDA content compared to the controls under the drought treatment. The levels of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) enzyme activity in the GhNAC2-A06 silenced plants were found to be lower compared to the controls when exposed to drought stress. Additionally, the downregulation of the drought stress-related genes, GhSAP12-D07, GhNCED1-A01, GhLEA14-A11, GhZAT10-D02, GhPROT2-A05, GhABF3-A03, GhABF2-D05, GhSAP3-D07, and GhCPK1-D04, was observed in the GhNAC2-A06 silenced cotton. Together, our research reveals that GhNAC2-A06 plays a role in the reaction of cotton to drought stress by affecting the expression of genes related to drought stress. The data obtained from this study lay the theoretical foundation for further in-depth research on the biological function and regulatory mechanisms of GhNAC2-A06.

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Section: Introductionmentioning

confidence: 99%

The Functions of an NAC Transcription Factor, GhNAC2-A06, in Cotton Response to Drought Stress

Saimi,

Wang,

Liusui

et al. 2023

Plants

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JAZ Genes in Cotton: Prospects for Improvements to Vegetative and Fibre Growth by Addressing Lepidopteran Herbivory Resistance Mechanisms

Rock,

Adhikari,

Parajulee

2024

Annual Plant Reviews Online

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Evolution of insect resistance is the primary threat to the long‐term efficacy of Bacillus thuringiensis (Bt) transgene technologies. Plants have a deeply conserved defence response to pests: Jasmonic acid (JA) hormone signalling mediated by transcriptional repressors called JASMONATE‐ZIM‐DOMAIN/JAZ. JAZs normally limit expression of plant defence pathways, promoting assimilate partitioning towards growth and reproduction, by their carboxyl terminal Jas motif that antagonises MYeloCytomatosis (MYC) master transcription factor activities. Deletion, alternative splicing/intron retention, or disruption of the Jas motif results in JA insensitivity and increased resistance to pathogens including arthropod herbivores, for example by production of secondary metabolites and new leaves with higher trichome density. JA‐mediated trichome initiation and elongation also impact cotton fibre production. Since its release in 2017, the third‐generation stacked commercial Bt insecticidal Vip3A protein traits are increasingly under severe pressure for evolution of Helicoverpa zea (bollworm) resistance. Regional differences in efficacy of Bollgard ® 3 and WideStrike ® 3 against lepidopteran pests and increasing pesticide use are emerging issues. Future transgenic field control failures from bollworm infestations and incursions of Helicoverpa armigera from Central America are likely in the U.S. Cotton Belt. In this systematic primer on the problem, we take a conceptual approach to consider JAZ genes as means to leverage ‘internal’ host‐derived herbivore resistance in cotton. We consider the genetic redundancy and pleiotropic nature of JAZ master regulators on tissue‐specific growth, development, crosstalk with hormonal and small RNA pathways as nodes in networks, and limitations of JAZ efficacy due to fitness costs/growth trade‐offs versus prospects for enhancing resistance networks to orchestrate transgressive segregation (generation of extreme phenotypes in breeding progeny not seen in parental lines).

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Roles of NAC transcription factors in cotton

Xu,

Zhao,

Chen

et al. 2024

J Cotton Res

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Climate deterioration, water shortages, and abiotic stress are the main threats worldwide that seriously affect cotton growth, yield, and fiber quality. Therefore, research on improving cotton yield and tolerance to biotic and abiotic stresses is of great importance. The NAC proteins are crucial and plant-specific transcription factors (TFs) that are involved in cotton growth, development, and stress responses. The comprehensive utilization of cotton NAC TFs in the improvement of cotton varieties through novel biotechnological methods is feasible. Based on cotton genomic data, genome-wide identification and analyses have revealed potential functions of cotton NAC genes. Here, we comprehensively summarize the recent progress in understanding cotton NAC TFs roles in regulating responses to drought, salt, and Verticillium wilt-related stresses, as well as leaf senescence and the development of fibers, xylem, and glands. The detailed regulatory network of NAC proteins in cotton is also elucidated. Cotton NAC TFs directly bind to the promoters of genes associated with ABA biosynthesis and secondary cell-wall formation, participate in several biological processes by interacting with related proteins, and regulate the expression of downstream genes. Studies have shown that the overexpression of NAC TF genes in cotton and other model plants improve their drought or salt tolerance. This review elucidates the latest findings on the functions and regulation of cotton NAC proteins, broadens our understanding of cotton NAC TFs, and lays a fundamental foundation for further molecular breeding research in cotton.

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Gene Expression Correlation Analysis Reveals MYC-NAC Regulatory Network in Cotton Pigment Gland Development

Cited by 4 publications

References 71 publications

The Functions of an NAC Transcription Factor, GhNAC2-A06, in Cotton Response to Drought Stress

The Functions of an NAC Transcription Factor, GhNAC2-A06, in Cotton Response to Drought Stress

JAZ Genes in Cotton: Prospects for Improvements to Vegetative and Fibre Growth by Addressing Lepidopteran Herbivory Resistance Mechanisms

Roles of NAC transcription factors in cotton

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