Mutation of SELF-PRUNING homologs in cotton promotes short-branching plant architecture

Si, Zhanfeng; Liu, Hui; Zhu, Jiankun; Chen, Jiedan; Wang, Qiong; Fang, Lei; Gao, Fengkai; Tian, Yue; Chen, Yali; Chang, Liming; Liu, Bingliang; Han, Zegang; Zhou, Baoliang; Hu, Yan; Huang, Xianzhong; Zhang, Tianzhen

doi:10.1093/jxb/ery093

Cited by 55 publications

(70 citation statements)

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“…hirsutum [63–65]. Our group has demonstrated that the FT homolog GhFT1 controls flowering time and TFL1 homolog SELFING-PRUNING ( GhSP ) regulates fruiting branches architecture in cotton [66–68], and similar findings have also been reported in other groups [69–71]. However, the exact biological functions of GhMFT homologs in Upland cotton remain unclear.…”

Section: Introductionsupporting

confidence: 53%

Identification of cotton MOTHER OF FT AND TFL1 homologs, GhMFT1 and GhMFT2, involved in seed germination

Liu

Sang

et al. 2019

PLoS ONE

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Plant phosphatidylethanolamine-binding protein (PEBP) is comprised of three clades: FLOWERING LOCUS T (FT), TERMINAL FLOWER1 (TFL1) and MOTHER OF FT AND TFL1 (MFT). FT/TFL1-like clades regulate identities of the determinate and indeterminate meristems, and ultimately affect flowering time and plant architecture. MFT is generally considered to be the ancestor of FT/TFL1, but its function is not well understood. Here, two MFT homoeologous gene pairs in Gossypium hirsutum , GhMFT1-A/D and GhMFT2-A/D , were identified by genome-wide identification of MFT -like genes. Detailed expression analysis revealed that GhMFT1 and GhMFT2 homoeologous genes were predominately expressed in ovules, and their expression increased remarkably during ovule development but decreased quickly during seed germination. Expressions of GhMFT1 and GhMFT2 homoeologous genes in germinating seeds were upregulated in response to abscisic acid (ABA), and their expressions also responded to gibberellin (GA). In addition, ectopic overexpression of GhMFT1 and GhMFT2 in Arabidopsis inhibited seed germination at the early stage. Gene transcription analysis showed that ABA metabolism genes ABA-INSENSITIVE3 ( ABI3 ) and ABI5 , GA signal transduction pathway genes REPRESSOR OF ga1-3 ( RGA ) and RGA-LIKE2 ( RGL2 ) were all upregulated in the 35S : GhMFT1 and 35S : GhMFT2 transgenic Arabidopsis seeds. GhMFT1 and GhMFT2 localize in the cytoplasm and nucleus, and both interact with a cotton bZIP transcription factor GhFD, suggesting that both of GhMFT1, 2 have similar intracellular regulation mechanisms. Taken together, the results suggest that GhMFT1 and GhMFT2 may act redundantly and differentially in the regulation of seed germination.

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Section: Introductionsupporting

confidence: 53%

Identification of cotton MOTHER OF FT AND TFL1 homologs, GhMFT1 and GhMFT2, involved in seed germination

Liu

Sang

et al. 2019

PLoS ONE

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“…Subsequently, several Mendelian genes related to growth, disease resistance, and fiber development have been successfully identified in cotton. For instance, GhACT_LI1 [43], GoPGF [44], GhLMI1-D1b [45], GoSP [46], and GhLMMD [47] for fiber development, glandless phenotype, leaf shape, branching, and necrotic leaf damage have been cloned using the corresponding mutants, respectively.…”

Section: Map-based Cloningmentioning

confidence: 99%

Gossypium Genomics: Trends, Scope, and Utilization for Cotton Improvement

Yang

Qanmber

Wang

et al. 2020

Trends in Plant Science

114

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Cotton (Gossypium spp.) is the most important natural fiber crop worldwide. The diversity of Gossypium species also provides an ideal model for investigating evolution and domestication of polyploids. However, the huge and complex cotton genome hinders genomic research. Technical advances in high-throughput sequencing and bioinformatics analysis have now largely overcome these obstacles, bringing about a new era of cotton genomics. Here, we review recent progress in Gossypium genomics based on whole genome sequencing, resequencing, and comparative genomics, which have provided insights about the genomic basis of fiber biogenesis and the landscape of cotton functional genomics. We address current challenges and present multidisciplinary genomics-enabled breeding strategies covering the breadth of high fiber yield, quality, and environmental resilience for future cotton breeding programs. Gossypium Genomics at a Glance As the world's most important fiber crop and a major source of seed oil and protein, cotton is cultivated in more than 75 countries around the globe [1]. Cotton fibers are seed trichomes, up to 65 mm long, composed of almost pure cellulose, and provide a unique single-celled model system for studying cell elongation and cell wall biogenesis [2]. The Gossypium genus is extraordinarily diverse, with eight diploid genome groups (A-G, and K) and one allopolyploid group (AD) [3,4]. Hybridization and polyploidization of two parental diploids, an A genome-like species with a D genome-like species, has resulted in at least seven allotetraploid species. Two allotetraploid species, Gossypium hirsutum and Gossypium barbadense, evolved independently; these two account for over 90% of annual commercial fiber production. Gossypium is ideal for investigating the origin, evolution, and domestication of polyploids [5-7]. Highlights Cotton is an important natural fiber crop cultivated worldwide that also provides an ideal model for investigating evolution and domestication of polyploids Combinations of the latest technologies, such as optical mapping, high-throughput chromosome conformation capture (Hi-C), and Pacific Biosciences (PacBio) long-reads, have been used to generate multiple high-quality reference genomes of diploid and allotetraploid cotton. Comparative population genomics illuminated the genetic history of cotton domestication and identified the genomic variation determining fiber yield, quality, and stress resistance.

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“…In cotton, FD could interact with FT and CEN (TFL1 homolog), and thus antagonize FT activity in the apex and may act as transcriptional repressors of flowering transition, leading to prolonged vegetative growth [ 30 , 31 ]. Though expression of FT did not significantly increase in the silencing plant, the activity of FT could further enhance interaction with FD and promoter flower.…”

Section: Discussionmentioning

confidence: 99%

Natural variation in a CENTRORADIALIS homolog contributed to cluster fruiting and early maturity in cotton

et al. 2018

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BackgroundPlant architecture and the vegetative-reproductive transition have major impacts on the agronomic success of crop plants, but genetic mechanisms underlying these traits in cotton (Gossypium spp.) have not been identified.ResultsWe identify four natural mutations in GoCEN-Dt associated with cluster fruiting (cl) and early maturity. The situ hybridization shows that GhCEN is preferentially expressed in cotton shoot apical meristems (SAM) of the main stem and axillary buds. Constitutive GhCEN-Dt overexpression suppresses the transition of the cotton vegetative apex to a reproductive shoot. Silencing GoCEN leads to early flowering and determinate growth, and in tetraploids causes the main stem to terminate in a floral bud, a novel phenotype that exemplifies co-adaptation of polyploid subgenomes and suggests new research and/or crop improvement approaches. Natural cl variations are enriched in cottons adapted to high latitudes with short frost-free periods, indicating that mutants of GoCEN have been strongly selected for early maturity.ConclusionWe show that the cotton gene GoCEN-Dt, a homolog of Antirrhinum CENTRORADIALIS, is responsible for determinate growth habit and cluster fruiting. Insight into the genetic control of branch and flower differentiation offers new approaches to develop early maturing cultivars of cotton and other crops with plant architecture appropriate for mechanical harvesting.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1518-8) contains supplementary material, which is available to authorized users.

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Mutation of SELF-PRUNING homologs in cotton promotes short-branching plant architecture

Abstract: We characterize GoSP genes underlying the development of cotton plants with short branches and clustered bolls, a phenotype that allows higher planting density and promotes increased fiber yield per acre.

Cited by 55 publications

References 58 publications

Identification of cotton MOTHER OF FT AND TFL1 homologs, GhMFT1 and GhMFT2, involved in seed germination

Identification of cotton MOTHER OF FT AND TFL1 homologs, GhMFT1 and GhMFT2, involved in seed germination

Gossypium Genomics: Trends, Scope, and Utilization for Cotton Improvement

Natural variation in a CENTRORADIALIS homolog contributed to cluster fruiting and early maturity in cotton

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