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Geographic patterns of genetic diversity and fertility restoration ability of Asian and African origin pearl millet populations

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The Crop Journal 2022年第2期10卷 468-477页

作者： K.Sudarshan Patil Shashi Kumar Gupta International Crops Research Institute for the Semi-Arid Tropics(ICRISAT) PatancheruHyderabad 502324TelanganaIndia Professor Jayashankar Telangana State Agricultural University(PJTSAU) RajendranagarHyderabad 500030TelanganaIndia

A set of 45 diverse Asian and African origin/bred populations of pearl millet were investigated multi-locationally for morphological traits including grain yield and assessed for their fertility restoration ability on three cytoplasmic male sterility(CMS) systems in two contrasting seasons. Significant genetic variation was found for all the yield linked traits. Multivariate analysis for grain yield and its component traits grouped these populations into five clusters. Most of the Asian origin populations grouped into single cluster(Cluster III) and separated from the rest of the African origin populations indicating the presence of correspondence between clustering pattern and geographical origin of the populations. Clusters dominated with Asian populations(As-As) had linkages with early flowering, short plant height, more number of tillers, small and thin panicles, small seeded and low grain yield compared to the clusters dominated by African populations(Af-Af) or African origin and Asian bred(Af-As) populations.Genetically related populations having common parentage were found grouped in same clusters.fertility restoration/maintainer frequency of 45 populations on three diverse CMS systems revealed that overall fertility restoration frequency was highest for A1(86%) followed by A4(37%) and for A5(7%) CMS system. Five populations were identified as potential sources for developing maintainer lines for all three CMS systems and eight populations were identified specifically for A;and A;CMS systems. A set of 11 and four populations were identified for restorer line development exclusively for A;and A;CMS system,respectively. Six populations were identified for the development of dual restorers for both A;and A;CMS system.

关键词： CMS systems fertility restoration Morphological diversity Pearl millet Populations

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Development of New InDel Marker to Detect Genotypes of Rf-1a Conferring fertility restoration of BT-Type Cytoplasmic Male Sterility in Rice

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Rice science 2014年第1期21卷 13-19页

作者： CHEN Tao ZHANG Ya-dong ZHU Zhen ZHAO Ling ZHAO Qing-yong ZHOU Li-hui YAO Shu YU Xin WANG Cai-lin Institute of Food Crops Jiangsu Academy of Agricultural Sciences / Jiangsu High Quality Rice R & D Center / Nanjing Branch of China National Center for Rice Improvement

Restorer line breeding is an important approach to enhance the heterosis and improve the yields of japonica hybrid rice. To improve the selection efficiency of restorer lines for BT-type cytoplasmic male sterility （CMS） in japonica rice, a functional marker InDeI-Rf-la based on the difference of nucleotide sequence in Rf-la locus between BT-type CMS lines and restorer lines was developed to detect the genotypes of different rice materials. Conventional indica rice varieties, restorer and maintainer lines without 574 bp deletion could restore the fertility for BT-type CMS in japonica rice. By contrast, most conventional japonica rice varieties except Aichi 106 and Yijing 12, with genotype of rf-larf-la showed the 574 bp deletion maintained sterility for BT-type CMS lines. To further verify the effect of genotyping detection in Rf-la locus, this marker was also used to amplify the genomic DNA in different japonica rice restorer lines, CMS lines, hybrids and F2 segregation population, and three genotypes in Rf-la locus could be distinguished distinctly. Therefore, the marker InDeI-Rf-la could be widely used for genetic id^ntifio.~tinn ~nd m^rkp.r-~.~.~i^fp.d .~.tAr.tinn （MA.~ in hr~=dinn i^nnnir~ r^fnr~=r lin==~

关键词： BT-type cytoplasmic male sterility fertility restoration Rf-la gene InDel marker japonica rice

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Identification and Genetic Analysis of fertility restoration Ability in Dongxiang Wild Rice (Oryza rufipogon)

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Rice science 2008年第1期15卷 21-28页

作者： CHEN Xiao-rong YANG Kong-song FU Jun-ru ZHU Chang-lan PENG Xiao-song HE Xiao-peng HE Hao-hua College of Agronomy Jiangxi Agricultural University~Key Laboratory of Crop Physiology Ecology Genetic and Breeding JiangxiProvince Nanchang 330045 China

Two populations of Dongxiang wild rice （Oryza rufipogon）, Shuitaoshu and Dongtangshang, were crossed with five male sterile rice lines with different cytoplasmic backgrounds （B06S, Zhenshan 97A, Xieqingzao A, Zhong 9A, and Yuetai A）, and the seed setting rate of the F1 was used to judge the fertility restoration ability in the Dongxiang wild rice. With P1, F1, P2, and F2 populations as materials, the Akaike＇s Information Criterion （AIC） was used to identify the major genes affecting quantitative traits, and when the major genes existed, the genetic effects of the major gene and the polygene and their genetic variance were estimated through segregation analysis. The seed setting rates of the F1 generation varied from 45.98% to 76.57%, suggesting that the Dongxiang wild rice had the fertility restoration ability. One major gene plus polygene mixed inheritance model was the most fitted genetic model for this trait in all the F2 populations. The heritability values of the major genes varied from 56.63% to 88.29% and those of the polygenes from 2.74% to 30.97%, and the total heritability values were from 63.17% to 94.01%. The major gene inheritance of the combination Zhong 9A/Dongtangshang was controlled by the additive effect without dominant effect, and the other nine combinatfons were by the completely dominant inheritance.

关键词： Dongxiang wild rice fertility restoration identification genetic effect Oryza rufipogon

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Protein markers associated with fertility restoration in japonica rice(Oryza sativaL.)

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Chinese Rice Research Newsletter 2001年第1期9卷 4-5页

作者： HONGDelin HSatoh TKumamaru QULeqing USSadar DeotofAgronomy NanjingAgriUnivNanjing210095China FacultyofAgru KyushuUnivHakozakiFukuoka812-0081Japan

As genetic markers, seed storage proteins have characters of high level of polymorphism, less environmental influence, and simple genetic control. In this study, Kinmaze (CK), Liuqianxin A, Liuqianxin B, Liuqianxin R, 77302-1, Ninghui3-2, C57, Chinsurah Boro Ⅱ, TN1, IR8, IR2A, and F1 and F2 of Liuqianxin A/77302-1 were used to detect protein markers associated with fertility restoration in japonica rice.

关键词： japonica rice fertility restoration genetic control

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The Abortion Mechanism and fertility restoration of Microspores during the Anther Development in Cotton Genic Male Sterile Line Yu 98-8A

The Abortion Mechanism and Fertility Restoration of Microspo...

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中国农学会棉花分会2017年年会暨第九次会员代表大会

作者： Yang Xiaojie Liu Ji Tang Zhongjie Sun Yao Zhao Yuanming Li Wu Xie Deyi Fang Weiping Industrial Crop Research Institute Henan Academy of Agricultural Sciences State Key Laboratory of Cotton Biology/Institute of Cotton Research of CAAS

Although cotton genic male sterility（GMS） plays an important role in the utilization of hybrid vigor,its precise molecular mechanism remains unclear.To characterize the molecular events of microspore abortion and fertility restoration,transcriptome,microRNA expression analysis combined with histological observations and hormones treatments were conducted in the cotton GMS line Yu 98-8A.Histological analysis showed the shriveled tetrad was the first significant microscopic phenotype that developed,indicating that the pollen mother cell formation phase and the following meiotic cycle are vital periods of microspores abortion in MS of Yu 98-8A.Biochemical transcriptome bioinformatic analysis indicated that the differentially expressed genes（DEGs） mainly involved in sugar and starch metabolism,oxidative phosphorylation,and phytohormones might play a critical and complicated role in pollen abortion.At the same time,microRNA expression analysis also showed indole-3-acetic acid（IAA） and gibberellic acid（GA） signalling tranduction pathways may play pivotal regulatory function in male sterility.Further studies have shown that regulating endogenous GA3 content in young buds restore the fertility of Yu 98-8A effectively.These results provide an important strategy of overcoming the bottleneck in cotton heterosis utilization for us to avoid the disadvantages（removal of about 50% fertile plants） of cotton genic male sterile lines effectively.

关键词： cotton male sterile abortion mechanism fertility restoration

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Delayed callose degradation restores the fertility of multiple P/TGMS lines in Arabidopsis

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Journal of Integrative Plant Biology 2022年第3期64卷 717-730页

作者： Kai-Qi Wang Ya-Hui Yu Xin-Lei Jia Si-Da Zhou Fang Zhang Xin Zhao Ming-Yue Zhai Yi Gong Jie-Yang Lu Yuyi Guo Nai-Ying Yang Shui Wang Xiao-Feng Xu Zhong-Nan Yang College of Biological and Environmental Engineering Jingdezhen UniversityJiangxi 333000China Shanghai Key Laboratory of Plant Molecular Sciences College of Life SciencesShanghai Normal UniversityShanghai 200234China

Photoperiod/temperature-sensitive genic male sterility(P/TGMS)is widely applied for improving crop production.Previous investigations using the reversible male sterile(rvms)mutant showed that slow development is a general mechanism for restoring fertility to P/TGMS lines in Arabidopsis.In this work,we isolated a restorer of rvms–2(res3),as the male sterility of rvms–2 was rescued by res3.Phenotype analysis and molecular cloning show that a point mutation in UPEX1 l in res3 leads to delayed secretion of callase A6 from the tapetum to the locule and tetrad callose wall degradation.Electrophoretic mobility shift assay and chromatin immunoprecipitation analysis demonstrated that the tapetal transcription factor ABORTED MICROSPORES directly regulates UPEX1 expression,revealing a pathway for tapetum secretory function.Early degradation of the callose wall in the transgenic line eliminated the fertility restoration effect of res3.The fertility of multiple known P/TGMS lines with pollen wall defects was also restored by res3.We propose that the remnant callose wall may broadly compensate for the pollen wall defects of P/TGMS lines by providing protection for pollen formation.A cellular mechanism is proposed to explain how slow development restores the fertility of P/TGMS lines in Arabidopsis.

关键词： callose degradation fertility restoration pollen wall pollen development P/TGMS

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MALE STERILITY 3 encodes a plant homeodomain-finger protein for male fertility in soybean

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Journal of Integrative Plant Biology 2022年第5期64卷 1076-1086页

作者： Jingjing Hou Weiwei Fan Ruirui Ma Bing Li Zhihui Yuan Wenxuan Huang Yueying Wu Quan Hu Chunjing Lin Xingqi Zhao Bao Peng Limei Zhao Chunbao Zhang Lianjun Sun State Key Laboratory of Agrobiotechnology Beijing Key Laboratory for Crop Genetic Improvementand College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193China Soybean Research Institute the National Engineering Research Center for SoybeanJilin Academy of Agricultural SciencesChangchun 130033China Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences Jiamusi 154007China

Male-sterile plants are used in hybrid breeding to improve yield in soybean(Glycine max(L.)Merr.).Developing the capability to alter fertility under different environmental conditions could broaden germplasm resources and simplify hybrid production.However,molecular mechanisms potentially underlying such a system in soybean were unclear.Here,using positional cloning,we identified a gene,MALE STERILITY 3(MS3),which encodes a nuclear-localized protein containing a plant homeodomain(PHD)-finger domain.A spontaneous mutation in ms3 causing premature termination of MS3 translation and partial loss of the PHD-finger.Transgenetic analysis indicated that MS3 knockout resulted in nonfunctional pollen and no selfpollinated pods,and RNA-seq analysis revealed that MS3 affects the expression of genes associated with carbohydrate metabolism.Strikingly,the fertility of mutant ms3 can restore under longd conditions.The mutant could thus be used to create a new,more stable photoperiod-sensitive genic male sterility line for two-line hybrid seed production,with significant impact on hybrid breeding and production.

关键词： fertility restoration male sterililty PHD-finger photoperiod soybean

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Development of Novel Cytoplasmic Male Sterile Source from Dongxiang Wild Rice(Oryza rufipogon)

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Rice science 2013年第5期20卷 379-382页

作者： SHEN Xian-hua YAN Song HUANG Ren-liang ZHU Shan XIONG Hong-liang SHEN Lin-jun Rice Research Institute Jiangxi Academy of Agricultural Sciences/Jiangxi Provincial Key Laboratory for Physiology and Genetics of Rice

This study was conducted to develop and characterize a novel cytoplasmic male sterile （CMS） source which was identified from Dongxiang wild rice （Oryza rufipogon） by crossing Dongxiang wild rice as female with Zhongzao 35, an indica inbred variety, as male and continuous backcrossing with Zhongzao 35. Observation under optical microscope manifested that this novel CMS belonged to typical abortion type with less pollen compared with wild abortive type cytoplasm （CMS-WA）. Sequential planting showed that this novel CMS has complete and stable male sterility. Testcross experiment showed that all the 24 tested materials including maintainer and restorer lines of CMS-WA and Honglian type cytoplasm （CMS-HL） and other indica inbred varieties are the maintainers with complete maintaining ability, suggesting that this novel CMS has fertility restoration totally different from CMS-WA and CMS-HL and belongs to a novel type of CMS. So far, we only discovered a unique fertility restoration source for this novel CMS. Inheritance analysis showed that the fertility restoration of this CMS was governed by three pairs of independent dominant genes. Prospect for application of this novel CMS system in hybrid rice breeding was also discussed.

关键词： Dongxiang wild rice cytoplasmic male sterility fertility restoration Oryza rufipogon

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