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GhWDL3 is involved in the formation and development of fiber cell morphology in upland cotton(Gossypium hirsutum L.)

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Journal of cotton Research 2024年第1期7卷 58-68页

作者： CHEN Baojun TIAN Zailong FU Guoyong ZHANG Ai SUN Yaru WANG Jingjing PAN Zhaoe LI Hongge HU Daowu XIA Yingying HE Shoupu DU Xiongming Zhengzhou Research Base National Key Laboratory of Cotton Bio-Breeding and Integrated UtilizationZhengzhou UniversityZhengzhouHenan 450001China National Key Laboratory of cotton Bio-Breeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangHenan 455000China National Supercomputing Center in Zhengzhou Zhengzhou UniversityZhengzhouHenan 450001China

Background cotton fiber is a model tissue for studying microtubule-associated proteins(MAPs).The Xklp2(TPX2)proteins that belong to the novel MAPs member mainly participate in the formation and development of microtubule(MT).However,there is a lack of studies concerning the systematic characterization of the TPX2 genes family in ***,the identification and portrayal of *** TPX2 genes can provide key targets for molecular manipula-tion in the breeding of cotton fiber *** In this study,TPX2 family genes were classified into two distinct subclasses TPXLs and MAP genes WAVE DAMP-ENED2-LIKE(WDLs)and quite conservative in ***3 was significantly up-regulated in 15 days post anthe-sis fibers of ZRI-015(an upland cotton with longer and stronger fiber).GhWDL3 promotes all stem hairs to become straight when overexpressed in Arabidopsis,which may indirectly regulate cotton fiber cell morphology during fiber *** induced gene silencing(VIGS)results showed that GhWDL3 inhibited fiber cell elongation at fiber development periods through regulating the expression of cell wall related *** These results reveal that GhWDL3 regulated cotton fiber cell elongation and provide crucial information for the further investigation in the regulatory mechanisms/networks of cotton fiber length.

关键词： upland cotton GhWDL3 Fiber length TPX2 Cytoskeleton Microtubule-associated proteins(MAPs)

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GhAP1-D3 positively regulates flowering time and early maturity with no yield and fiber quality penalties in upland cotton

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Journal of Integrative Plant Biology 2023年第4期65卷 985-1002页

作者： Caixiang Wang Juanjuan Liu Xiaoyu Xie Ji Wang Qi Ma Pengyun Chen Delong Yang Xiongfeng Ma Fushun Hao Junji Su State Key Laboratory of Aridland Crop Science College of Life Science and TechnologyGansu Agricultural UniversityLanzhou 730070China State Key Laboratory of cotton Biology College of Life ScienceHenan UniversityKaifeng 475004China cotton Research Institute Xinjiang Academy of Agricultural and Reclamation ScienceShihezi 832000China State Key Laboratory of cotton Biology Institute of Cotton Research of Chinese Academy of Agricultural SciencesAnyang 455000China

Flowering time(FTi)is a major factor determining how quickly cotton plants reach *** maturity greatly affects lint yield and fiber quality and is crucial for mechanical harvesting of cotton in northwestern ***,few quantitative trait loci(QTLs)or genes regulating early maturity have been reported in cotton,and the underlying regulatory mechanisms are largely *** this study,we characterized 152,68,and 101 loci that were significantly associated with the three key early maturity traits—FTi,flower and boll period(FBP)and whole growth period(WGP),respectively,via four genome-wide association study methods in upland cotton(Gossypium hirsutum).We focused on one major early maturity-related genomic region containing three single nucleotide polymorphisms on chromosome D03,and determined that GhAP1-D3,a gene homologous to Arabidopsis thaliana APETALA1(AP1),is the causal locus in this *** plants overexpressing GhAP1-D3 showed significantly early flowering and early maturity without penalties for yield and fiber quality compared to wild-type(WT)*** contrast,the mutant lines of GhAP1-D3 generated by genome editing displayed markedly later flowering than the ***1-D3 interacted with GhSOC1(SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1),a pivotal regulator of FTi,both in vitro and in *** in GhAP1-D3 transcript levels clearly affected the expression of multiple key flowering regulatory ***,DNA hypomethylation and high levels of H3K9ac affected strong expression of GhAP1-D3 in early-maturing cotton *** propose that epigenetic modifications modulate GhAP1-D3 expression to positively regulate FTi in cotton through interaction of the encoded GhAP1 with GhSOC1 and affecting the transcription of multiple flowering-related *** findings may also lay a foundation for breeding early-maturing cotton varieties in the future.

关键词： upland cotton early maturity genome‐wide association studies QTL AP1 flowering time

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Comparative performance of hybrid generations reveals the potential application of F_(2)hybrids in upland cotton

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Journal of cotton Research 2022年第2期5卷 193-206页

作者： CHEN Liangliang TANG Huini ZHANG Xuexian QI Tingxiang GUO Liping SHAHZAD Kashif WANG Hailin QIAO Xiuqin ZANG Rong ZHANG Meng WU Jianyong XING Chaozhu State Key Laboratory of cotton Biology In stitute of Cotton Research of Chinese Academy of Agricultural SciencesKey Laboratory for Cotton Genetic ImprovementMinistry of Agriculture and Rural AffairsAnyang 455000HenanChina

Background:The utilization of heterosis has greatly improved the productivity of cotton ***,a major constraint for the large-scale promotion of F_(1) hybrid cotton is artificial emasculation and *** study proposed the potential utilization of F_(2) hybrids to improve upland cotton production through a comparative evaluation of hybrid ***:Eight upland cotton varieties were analyzed and crosses were made according to NCII incomplete diallel cross-breeding design in two cotton belts of *** analysis revealed significant differences in agronomic,yield,and fiber quality in both generations and *** broad-sense heritability of agronomic and yield traits was relatively higher than quality ***,the narrow-sense heritability of some traits was higher in F_(2) than in the F_(1) generation in both cotton ***,parental lines Zhong901,ZB,L28,and Z98 were observed with maximum combining ability while combinations with strong special combining ability were ZB×DT,L28×Z98,and ZB×*** yield traits heterosis was predominant in both ***,the level of heterosis was altered with trait,hybrid combination,generation,and ***,L28×Z98 performed outstandingly in *** lint yield(LY)was 24.2%higher in F_(1) and 11.6%in F_(2) than that of the control Ruiza *** performance of SJ48×Z98 was excellent in Aral which showed 36.5%higher LY in F_(2)and 10.9%in F_(2)than control CCRI *** results revealed most hybrid combinations had shown a low level of heterosis for agronomic and fiber quality traits in both ***,ZB×DT and L28×Z98 showed hybrid vigor for multiple traits in both generations and cotton *** is feasible to screen strong heterosis hybrid combinations with fine fiber in early *** the two environments,the correlation of some traits showed the same trend,and the correlation degree of Anyang site was higher than that

关键词： upland cotton F_(2)generation Combining ability Heterosis Heritability

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Genetic variability predicting breeding potential of upland cotton(Gossypium hirsutum L.)for high temperature tolerance

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Journal of cotton Research 2023年第2期6卷 81-97页

作者： FAROOQ Amjad SHAKEEL Amir SAEED Asif FAROOQ Jehanzeb RIZWAN Muhammad CHATTHA Waqas Shafqat SARWAR Ghulam RAMZAN Yasir cotton Research Station Ayub Agricultural Research InstituteFaisalabad 38000Pakistan Department of Plant Breeding and Genetics University of AgricultureFaisalabad 38040Pakistan

Background High temperature stress at peak flowering stage of cotton is a major hindrance for crop *** study aimed to increase genetic divergence regarding heat tolerance in newly developed cultivars and *** cotton genotypes and 40 F1(hybrids)were tested under field conditions following the treatments,viz.,high temperature stress and control at peak flowering stage in August and October under April and June sowing,*** The mean squares revealed significant differences among genotypes,treatments,genotype×treatment for relative cell injury,chlorophyll contents,canopy temperature,boll retention and seed cotton yield per *** genetic diversity among 50 genotypes was analyzed through cluster analysis and heat susceptibility index(HSI).The heat tolerant genotypes including FH-Noor,NIAB-545,FH-466,FH-Lalazar,FH-458,NIAB-878,IR-NIBGE-8,Weal-AGShahkar,and heat sensitive,i.e.,CIM-602,Silky-3,FH-326,SLH-12 and FH-442 were hybridized in line×tester fashion to produce F1 *** breeding materials’populations(40 F1)revealed higher specific combining ability variances along with dominance variances,decided the non-additive type gene action for all the *** best general combining ability effects for most of the traits were displayed by the lines,i.e.,FH-Lalazar,NIAB-878 along with testers FH-326 and *** combining ability effects and better-parent heterosis were showed by the crosses,viz.,FH-Lalazar×Silky-3,FH-Lalazar×FH-326,NIAB-878×Silky-3,and NIAB-878×FH-326 for seed cotton yield and yield contributing traits under high temperature *** Heterosis breeding should be carried out in the presence of non-additive type gene action for all the studied *** best combiner parents with better-parent heterosis may be used in crossing program to develop high yielding cultivars,and hybrids for high temperature stress tolerance.

关键词： High temperature upland cotton Peak flowering Heterosis Gene action Combining ability

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Selection and Characterization of a Novel Photoperiod-Sensitive Male Sterile Line in upland cotton

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Journal of Integrative Plant Biology 2013年第7期55卷 608-618页

作者： Jianhui Ma Hengling Wei Ji Liu Meizhen Song Chaoyou Pang Long Wang Wenxiang Zhang Shuli Fan Shuxun Yu State Key Laboratory of cotton Biology the Institute of Cotton Researchthe Chinese Academy of Agricultural Sciences College of Life Sciences Henan Normal University College of Agronomy Northwest A & F University

upland cotton （Gossypium hirsutum L.） shows strong heterosis. However, heterosis is not widely utilized owing to the high cost of hybrid seed production. Creation of a photoperiod-sensitive genetic male sterile line could substantially reduce the cost of hybrid seed production in upland cotton. Such a mutant with virescent marker was found by space mutation in near-earth orbit and its traits had been stable after 4 years of selection in Anyang and Sanya, China. This mutant was fertile with an 11-12.5 h photoperiod when the temperature was higher than 21.5 ℃ and was sterile with a 13-14.5 h photoperiod. Genetic analysis indicated that both traits were controlled by a single recessive gene or two closely linked genes. Also, the cytological observations and transcriptome profiling analysis showed that the degradation of pollen grain cytoplasm should be the primary reason why the mutant line were male sterile under long-day conditions.

关键词： Photoperiod-sensitive genetic male sterile sterility mechanism upland cotton virescent marker.

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Major Gene Identification and Quantitative Trait Locus Mapping for YieldRelated Traits in upland cotton(Gossypium hirsutum L.)

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Journal of Integrative Agriculture 2014年第2期13卷 299-309页

作者： XIA Zhe ZHANG Xin LIU Yang-yang JIA Zi-fang ZHAO Hai-hong LI Cheng-qi WANG Qing-lian College of Life Sciences Henan Normal University Key Discipline Open Lab on Crop Molecular Breeding of Henan Institute of Higher Learning/cotton Research Institute Henan Institute of Science and Technology

Segregation analysis of the mixed genetic model of major gene plus polygene was used to identify the major genes for cotton yield-related traits using six generations P1, P2, F1, B1, B2, and F2 generated from the cross of Baimian 1 x TM-1. In addition to boll size and seed index, the major genes for the other five traits were detected： one each for seed yield, lint percentage, boll number, lint index; and two for lint yield. Quantitative trait locus/loci （QTL） mapping was performed in the F2 and F2：3 populations of above cross through molecular marker technology, and a total of 50 QTL （26 suggestive and 24 significant） for yield-related traits were detected. Four common QTL were discovered： qLP-3b（F2）/qLP-3（F2：3） and qLP-19b （F2）/qLP-19（F2：3） for lint percentage, qBN-17（F2）/qBN-17（F2：3） for boll number, and qBS-26b（F2）/qBS-26（F2：3） for boll size. Especially, qLP- 3b（Fz）/qLP-3（F2：3）, not only had LOD scores 〉3 but also exceeded the permutation threshold （5.13 and 5.29, respectively）, correspondingly explaining 23.47 and 29.55% of phenotypic variation. This QTL should be considered preferentially in marker assisted selection （MAS）. Segregation analysis and QTL mapping could mutually complement and verify, which provides a theoretical basis for genetic improvement of cotton yield-related traits by using major genes （QTL）.

关键词： major gene segregation analysis QTL mapping yield-related traits upland cotton

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Transcriptome and QTL analyses reveal candidate genes for fiber quality in upland cotton

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The Crop Journal 2020年第1期8卷 98-106页

作者： Hantao Wang Ruiting Zhang Chao Shen Ximei Li De Zhu Zhongxu Lin State Key Laboratory of cotton Biology Institute of Cotton Research of CAASAnyang 455000HenanChina National Key Laboratory of Crop Genetic Improvement College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina cCollege of Agronomy and Plant Protection Qingdao Agricultural UniversityShandong Key Laboratory of Dryland Farming TechnologyQingdao 266109ShandongChina

With increasing demand for high-quality cotton,it is desirable to identify genes involved in fiber development for molecular improvement of *** this study,780 differentially expressed genes(DEGs)were identified in developing fibers at 10 days post-anthesis(DPA)in Gossypium hirsutum ***962 and *** *** 5 using *** 15 stable QTL for fiber quality identified in the same two parents in previous studies,4,3,6,1,and 1 QTL were associated with fiber length(FL),fiber strength(FS),micronaire(MIC),fiber elongation(FE)and fiber length uniformity ratio(FU),*** of DEGs and QTL allowed the identification of 31 genes in 9 QTL regions,of which 25 were highly expressed in fibers based on the transcriptome datasets and 9 were preferentially expressed in different stages of fiber ***_A01G0453(GhDTX19),Gh_D07G1581 and Gh_D04G0942 were expressed specifically in 5 and 10 DPA fibers,with Gh_D04G0942 showing low expression in other tissues except ***_D07G1799(GhGAUT9),Gh_D11G0326(GhVPS29),Gh_D11G0333(GhTCP14),and Gh_D11G0334(GhNRP2)were preferentially expressed in 5 or 10 DPA fibers;Gh_A01G0397(GhABCG10)and Gh_D07G1744 were expressed specifically in 20 and 25 DPA *** results suggest candidate genes for molecular improvement of cotton fiber quality.

关键词： upland cotton Fiber quality RNA-seq QTL Candidate genes

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Genetic mapping and identification of Lg^(f) loci controlling green fuzz in upland cotton(Gossypium hirsutum L.)

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The Crop Journal 2021年第4期9卷 777-784页

作者： Dexin Liu Xueying Liu Yao Su Xiao Zhang Kai Guo Zhonghua Teng Jian Zhang Dajun Liu Zhengsheng Zhang College of Agronomy and Biotechnology Southwest UniversityChongqing 400716China

Naturally colored cotton fiber is environment-friendly but has monotonous color and poor fiber *** of green fiber or fuzz genes would aid in investigating the biosynthesis of green pigments in cotton fibers. In this study, we established a mapping population and found that the Lg^(f) trait(white lint and green fuzz) from Gossypium hirsutum race latifolium is controlled by an incompletely dominant *** Lg^(f) locus was mapped to a 71-kb interval on chromosome 21 containing seven genes, including a transcription factor with similarity to Arabidopsis MYB9. Harboring 13 SNPs and a 4-bp insertion/deletion in its promoter, GhMYB9 was highly up-regulated in the critical period for green pigment development in fuzz. Virus-induced gene silencing of GhMYB9 in a green-fuzz accession of G. hirsutum race latifolium TX-41 conferred white or light green fuzz. These results suggest that GhMYB9 is an important contributor to green pigments in cotton fiber and shed light on the regulatory mechanism controlling green pigmentation.

关键词： upland cotton Green fuzz Lg^(f) MYB9 Green pigment

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Development of a core set of SNP markers for the identifi cation of upland cotton cultivars in China

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Journal of Integrative Agriculture 2016年第5期15卷 954-962页

作者： KUANG Meng WEI Shou-jun WANG Yan-qin ZHOU Da-yun MA Lei FANG Dan YANG Wei-hua MA Zhi-ying Hebei Research Base for State Key Laboratory of cotton Biology/College of Agronomy Hebei Agricultural University Institute of cotton Research Chinese Academy of Agriculture Sciences

Considering the advantages of single nucleotide polymorphisms（SNP） in genotyping and variety identification, the first set public SNP markers at cotton Marker Database（http：//***/） were validated and screened across standard varieties of cotton distinctness, uniformity and stability（DUS） test, aiming to obtain an appropriate set of core SNP markers suitable for upland cotton cultivars in China. A total of 399 out of 1 005 SNPs from 270 loci including 170 insertions-deletions（In Dels） were evaluated for their polymorphisms among 30 standard varieties using Sanger sequencing. As a result, 147 loci were sequenced successfully, 377 SNPs and 49 In Dels markers were obtained. Among the 377 SNP markers, 333 markers（88.3%） were polymorphic between Gossypium hirsutum and G. barbadense, while 164 markers（43.5%） were polymorphic within upland cotton. As for In Del markers, the polymorphic rate is relatively lower than that of SNP both between species and within species. The homozygous DNA locus ratio of 121 SNPs was higher than 86.2% while that of other 43 SNPs was less than 70%. Only 64 SNPs displayed completely homozygous genotypes among all of the detected upland cotton varieties with 100% homozygous DNA locus ratio. At last, a set of 23 pairs of core SNPs were achieved in view of avoidance of linkage, with polymorphism information content（PIC） values varying from 0.21 to 0.38 with an average of 0.28. Genotype characteristics and genetic diversity were analyzed based on the set of core markers, while 40 pairs of core simple-sequence repeats（SSR） primers comprised of 10 sets of four multiplex PCR combinations were also used for analysis based on fluorescence detection system. Comparison results indicated that the genetic diversity level was almost equal, while various varieties were significantly different from each other. Genetic relationship revealed by SSR markers is related to geographic source to a certain extent. Meanwhile clustering results analyzed b

关键词： upland cotton core SNP DUS genotyping

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Association analysis of fiber quality traits and exploration of elite alleles in upland cotton cultivars/accessions(Gossypium hirsutum L.)

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Journal of Integrative Plant Biology 2014年第1期56卷 51-62页

作者： Caiping Cai Wenxue Ye Tianzhen Zhang Wangzhen Guo State Key Laboratory of Crop Genetics & Germplasm Enhancement Hybrid Cotton R & D Engineering Research Center Ministry of EducationNanjing Agricultural University

Exploring the elite al eles and germplasm acces-sions related to fiber quality traits wil accelerate the breeding of cotton for fiber quality improvement. In this study, 99 Gossypium hirsutum L. accessions with diverse origins were used to perform association analysis of fiber quality traits using 97 polymorphic microsatel ite marker primer pairs. A total of 107 significant marker-trait associations were detected for three fiber quality traits under three different environments, with 70 detected in two or three environments and 37 detected in only one environment. Among the 70 significant marker-trait associations, 52.86% were reported previously, implying that these are stable loci for target traits. Furthermore, we detected a large number of elite al eles associated simulta-neously with two or three traits. These elite al eles were mainly from accessions col ected in China, introduced to China from the United States, or rare al eles with a frequency of less than＆amp;nbsp;5%. No one cultivar contained more than half of the elite al eles, but 10 accessions were col ected from China and the two introduced from the United States did contain more than half of these al eles. Therefore, there is great potential for mining elite al eles from germplasm accessions for use in fiber quality improvement in modern cotton breeding.

关键词： Association mapping elite allele fiber quality populationstructure upland cotton

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