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https://www.readbyqxmd.com/read/28638401/development-of-elite-bph-resistant-wide-spectrum-restorer-lines-for-three-and-two-line-hybrid-rice
#1
Fengfeng Fan, Nengwu Li, Yunping Chen, Xingdan Liu, Heng Sun, Jie Wang, Guangcun He, Yingguo Zhu, Shaoqing Li
Hybrid rice has contributed significantly to the world food security. Breeding of elite high-yield, strong-resistant broad-spectrum restorer line is an important strategy for hybrid rice in commercial breeding programs. Here, we developed three elite brown planthopper (BPH)-resistant wide-spectrum restorer lines by pyramiding big-panicle gene Gn8.1, BPH-resistant genes Bph6 and Bph9, fertility restorer genes Rf3, Rf4, Rf5, and Rf6 through molecular marker assisted selection. Resistance analysis revealed that the newly developed restorer lines showed stronger BPH-resistance than any of the single-gene donor parent Luoyang-6 and Luoyang-9...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28636095/suppression-or-knockout-of-saf-sam-overcomes-the-sa-mediated-hybrid-male-sterility-in-rice
#2
Yongyao Xie, Baixiao Niu, Yunming Long, Gousi Li, Jintao Tang, Yaling Zhang, Ding Ren, Yao-Guang Liu, Letian Chen
Hybrids between the indica and japonica subspecies of rice (Oryza sativa) are usually sterile, which hinders utilization of heterosis in the inter-subspecific hybrid breeding. The complex locus Sa comprises two adjacently located genes, SaF and SaM, which interact to cause abortion of pollen grains carrying the japonica allele in japonica-indica hybrids. Here we showed that silencing of SaF or SaM by RNA interference restored male fertility in indica-japonica hybrids with heterozygous Sa. We further used CRISPR/Cas9-based genome editing to knockout the SaF and SaM alleles respectively of an indica rice line to create hybrid-compatible lines...
June 21, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28635129/micrornas-involved-in-auxin-signalling-modulate-male-sterility-under-high-temperature-stress-in-cotton-gossypium-hirsutum
#3
Yuanhao Ding, Yizan Ma, Nian Liu, Jiao Xu, Qin Hu, Yaoyao Li, Yuanlong Wu, Sai Xie, Longfu Zhu, Ling Min, Xianlong Zhang
Male sterility caused by long-term high temperature (HT) stress occurs widely in crops. MicroRNAs (miRNAs), a class of endogenous non-coding small RNAs, play an important role in the plant response to various abiotic stresses. To dissect the working principle of miRNAs in male sterility under HT stress in cotton, a total of 112 known miRNAs, 270 novel miRNAs and 347 target genes were identified from anthers of HT-insensitive (84021) and HT-sensitive (H05) cotton cultivars under normal temperature (NT) and HT conditions through small RNA and degradome sequencing...
June 21, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28634273/the-c-elegans-vapb-homolog-vpr-1-is-a-permissive-signal-for-gonad-development
#4
Pauline A Cottee, Tim Cole, Jessica Schultz, Hieu D Hoang, Jack Vibbert, Sung Min Han, Michael A Miller
VAMP/synaptobrevin-associated proteins (VAPs) contain an N-terminal major sperm protein domain (MSPd) that is associated with amyotrophic lateral sclerosis. VAPs have an intracellular housekeeping function, as well as an extracellular signaling function mediated by the secreted MSPd. Here we show that the C. elegans VAP homolog VPR-1 is essential for gonad development. vpr-1 null mutants are maternal effect sterile due to arrested gonadogenesis following embryo hatching. Somatic gonadal precursor cells and germ cells fail to proliferate fully and complete their respective differentiation programs...
June 15, 2017: Development
https://www.readbyqxmd.com/read/28630322/tcte1-is-a-conserved-component-of-the-dynein-regulatory-complex-and-is-required-for-motility-and-metabolism-in-mouse-spermatozoa
#5
Julio M Castaneda, Rong Hua, Haruhiko Miyata, Asami Oji, Yueshuai Guo, Yiwei Cheng, Tao Zhou, Xuejiang Guo, Yiqiang Cui, Bin Shen, Zibin Wang, Zhibin Hu, Zuomin Zhou, Jiahao Sha, Renata Prunskaite-Hyyrylainen, Zhifeng Yu, Ramiro Ramirez-Solis, Masahito Ikawa, Martin M Matzuk, Mingxi Liu
Flagella and cilia are critical cellular organelles that provide a means for cells to sense and progress through their environment. The central component of flagella and cilia is the axoneme, which comprises the "9+2" microtubule arrangement, dynein arms, radial spokes, and the nexin-dynein regulatory complex (N-DRC). Failure to properly assemble components of the axoneme leads to defective flagella and in humans leads to a collection of diseases referred to as ciliopathies. Ciliopathies can manifest as severe syndromic diseases that affect lung and kidney function, central nervous system development, bone formation, visceral organ organization, and reproduction...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28625022/ethical-moral-and-theological-insights-into-advances-in-male-pediatric-and-adolescent-fertility-preservation
#6
REVIEW
J J Ramstein, J Halpern, A J Gadzinski, R E Brannigan, J F Smith
The successful treatment of boys with cancer has led to increasing attention to preserving their quality of life after completing cancer therapy. One of the top priorities for living a full life is keeping open the opportunity to have children. While sperm banking for males facing sterilizing cancer treatment can be effective, this approach requires subsequent use of reproductive procedures such as in vitro fertilization (IVF) or intrauterine insemination (IUI) to achieve a pregnancy. Advances in fertility preservation techniques may allow pre-pubertal boys to conceive using advanced stem cell technologies and stem cell transplantation in the future...
June 18, 2017: Andrology
https://www.readbyqxmd.com/read/28621722/comparative-analysis-of-genome-wide-dna-methylation-profiles-for-the-genic-male-sterile-cabbage-line-01-20s-and-its-maintainer-line
#7
Fengqing Han, Xiaoli Zhang, Xing Liu, Henan Su, Congcong Kong, Zhiyuan Fang, Limei Yang, Mu Zhuang, Yangyong Zhang, Yumei Liu, Zhansheng Li, Honghao Lv
Methylation modifications play an important role in multiple biological processes. Several studies have reported altered methylation patterns in male sterile plants such as rice and wheat, but little is known about the global methylation profiles and their possible roles in the cabbage (Brassicaoleracea) male sterile line. In this study, single-base-resolution bisulfite sequencing (BS-Seq) was adopted to identify the pattern and degree of cytosine methylation in the male sterile line 01-20S and its near-isogenic fertile line 01-20F...
June 16, 2017: Genes
https://www.readbyqxmd.com/read/28611814/mapping-and-preliminary-analysis-of-aborted-microspores-ams-as-the-candidate-gene-underlying-the-male-sterility-ms-5-mutant-in-melon-cucumis-melo-l
#8
Yunyan Sheng, Yudan Wang, Shiqi Jiao, Yazhong Jin, Peng Ji, Feishi Luan
Melon is an important agricultural and economic vegetable crop worldwide. The genetic male sterility mutant (ms-5) has a recessive nuclear gene that controls the male sterility germplasm. Male sterility could reduce the cost of F1 seed production in melon, but heterozygous fertile plants should be removed before pollination. In this study, bulked segregant analysis combined with specific length amplified fragment sequencing was applied to map the single nuclear male sterility recessive gene. A 30-kb candidate region on chromosome 9 located on scaffold 000048 and spanning 2,522,791 to 2,555,104 bp was identified and further confirmed by cleavage amplified polymorphic sequence markers based on parental line resequencing data and classical mapping of 252 F2 individuals...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28604770/pervasive-antagonistic-interactions-among-hybrid-incompatibility-loci
#9
Rafael F Guerrero, Christopher D Muir, Sarah Josway, Leonie C Moyle
Species barriers, expressed as hybrid inviability and sterility, are often due to epistatic interactions between divergent loci from two lineages. Theoretical models indicate that the strength, direction, and complexity of these genetic interactions can strongly affect the expression of interspecific reproductive isolation and the rates at which new species evolve. Nonetheless, empirical analyses have not quantified the frequency with which loci are involved in interactions affecting hybrid fitness, and whether these loci predominantly interact synergistically or antagonistically, or preferentially involve loci that have strong individual effects on hybrid fitness...
June 12, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28597062/an-anther-specific-gene-phgrp-is-regulated-by-phmyc2-and-causes-male-sterility-when-overexpressed-in-petunia-anthers
#10
Yuanzheng Yue, Chaoqun Yin, Rui Guo, Hao Peng, Zhaonan Yang, Guofeng Liu, Manzhu Bao, Huirong Hu
An anther-specific GRP gene, regulated by PhMYC2 , causes a significant reduction of male fertility when overexpressed in petunia, and its promoter is efficient in genetic engineering of male-sterile lines. Glycine-rich proteins (GRPs) play important roles in plant anther development; however, the underlying mechanisms and related regulatory networks are poorly understood. In this study, a novel glycine-rich family gene designated as PhGRP was isolated from Petunia hybrida 'Fantasy Red'. The qRT-PCR analysis showed that it expressed specifically in anthers, and its expression peaked earlier than those well-known tapetum-specific genes, such as TA29, and several genes with the classic cis-regulatory element 'anther-box' in petunia during its anther development...
June 9, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28595569/genome-wide-comparative-transcriptome-analysis-of-cms-d2-and-its-maintainer-and-restorer-lines-in-upland-cotton
#11
Jianyong Wu, Meng Zhang, Bingbing Zhang, Xuexian Zhang, Liping Guo, Tingxiang Qi, Hailin Wang, Jinfa Zhang, Chaozhu Xing
BACKGROUND: Cytoplasmic male sterility (CMS) conferred by the cytoplasm from Gossypium harknessii (D2) is an important system for hybrid seed production in Upland cotton (G. hirsutum). The male sterility of CMS-D2 (i.e., A line) can be restored to fertility by a restorer (i.e., R line) carrying the restorer gene Rf1 transferred from the D2 nuclear genome. However, the molecular mechanisms of CMS-D2 and its restoration are poorly understood. RESULTS: In this study, a genome-wide comparative transcriptome analysis was performed to identify differentially expressed genes (DEGs) in flower buds among the isogenic fertile R line and sterile A line derived from a backcross population (BC8F1) and the recurrent parent, i...
June 8, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28592558/duplication-and-loss-of-function-of-genes-encoding-rna-polymerase-iii-subunit-c4-causes-hybrid-incompatibility-in-rice
#12
Giao Ngoc Nguyen, Yoshiyuki Yamagata, Yuko Shigematsu, Miyako Watanabe, Yuta Miyazaki, Kazuyuki Doi, Kosuke Tashiro, Satoru Kuhara, Hiroyuki Kanamori, Jianzhong Wu, Takashi Matsumoto, Hideshi Yasui, Atsushi Yoshimura
Reproductive barriers are commonly observed in both animals and plants, in which they maintain species integrity and contribute to speciation. This report shows that a combination of loss-of-function alleles at two duplicated loci, DUPLICATED GAMETOPHYTIC STERILITY 1 (DGS1) on chromosome 4 and DGS2 on chromosome 7, causes pollen sterility in hybrid progeny derived from an interspecific cross between cultivated rice, Oryza sativa, and an Asian annual wild rice, Oryza nivara Male gametes carrying the DGS1 allele from O...
June 7, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28585692/osgcd1-is-essential-for-rice-fertility-and-required-for-embryo-dorsal-ventral-pattern-formation-and-endosperm-development
#13
Xiaorong Huang, Xiongbo Peng, Meng-Xiang Sun
Rice fertility is critical for rice reproduction and is thus a focus of interest. Most studies have addressed male sterility and its relation to rice production. The mechanisms of regulation of embryogenesis and endosperm development are essential for rice reproduction, but remain largely unknown. Here, we report a functional analysis of the rice gene OsGCD1, which encodes a highly conserved homolog of Arabidopsis GCD1 (GAMETE CELLS DEFECTIVE1). OsGCD1 mutants were generated using the CRISPR/Cas9 system and subjected to functional analysis...
June 6, 2017: New Phytologist
https://www.readbyqxmd.com/read/28578714/intimate-partner-violence-and-contraceptive-use-in-india-the-moderating-influence-of-conflicting-fertility-preferences-and-contraceptive-intentions
#14
Walter Forrest, Dharmalingam Arunachalam, Kannan Navaneetham
Several studies report that women exposed to intimate partner violence (IPV) are less likely to use contraception, but the evidence that violence consistently constrains contraceptive use is inconclusive. One plausible explanation for this ambiguity is that the effects of violence on contraceptive use depend on whether couples are likely to have conflicting attitudes to it. In particular, although some men may engage in violence to prevent their partners from using contraception, they are only likely to do so if they have reason to oppose its use...
June 5, 2017: Journal of Biosocial Science
https://www.readbyqxmd.com/read/28576861/pharmacological-inhibition-of-the-dna-damage-checkpoint-prevents-radiation-induced-oocyte-death
#15
Vera D Rinaldi, Kristin Hsieh, Robert Munroe, Ewelina M Bolcun-Filas, John C Schimenti
Ovarian function is directly correlated with survival of the primordial follicle reserve. Women diagnosed with cancer have a primary imperative of treating the cancer, but since the resting oocytes are hypersensitive to the DNA-damaging modalities of certain chemo- and radiotherapeutic regimens, such patients face the collateral outcome of premature loss of fertility and ovarian endocrine function. Current options for fertility preservation primarily include collection and cryopreservation of oocytes or in vitro fertilized oocytes, but this necessitates a delay in cancer treatment and additional assisted reproductive technology (ART) procedures...
June 2, 2017: Genetics
https://www.readbyqxmd.com/read/28574629/reduction-of-iaa-methyltransferase-activity-compensates-for-high-temperature-male-sterility-in-arabidopsis
#16
Mohamad Abbas, Jorge Hernández-García, Noel Blanco-Touriñán, Norma Aliaga, Eugenio G Minguet, David Alabadí, Miguel A Blázquez
High temperature is a general stress factor that causes a decrease in crop yield. It has been shown that auxin application reduces the male sterility caused by exposure to higher temperatures. However, widespread application of a hormone with vast effects on plant physiology may be discouraged in many cases. Therfore, the generation of new plant varieties that locally enhance auxin in reproductive organs may represent an alternative strategy. We have explored the possibility of increasing indoleacetic acid (IAA) in ovaries by reducing IAA METHYLTRANSFERASE1 (IAMT1) activity in Arabidopsis thaliana...
June 2, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28559348/ap1g-mediates-vacuolar-acidification-during-synergid-controlled-pollen-tube-reception
#17
Jia-Gang Wang, Chong Feng, Hai-Hong Liu, Qiang-Nan Feng, Sha Li, Yan Zhang
Double fertilization in angiosperms requires the delivery of immotile sperm through pollen tubes, which enter embryo sacs to initiate synergid degeneration and to discharge. This fascinating process, called pollen tube reception, involves extensive communications between pollen tubes and synergids, within which few intracellular regulators involved have been revealed. Here, we report that vacuolar acidification in synergids mediated by AP1G and V-ATPases might be critical for pollen tube reception. Functional loss of AP1G or VHA-A, encoding the γ subunit of adaptor protein 1 or the shared component of two endomembrane V-ATPases, respectively, impaired synergid-controlled pollen tube reception and caused partial female sterility...
June 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28554473/differential-proteomic-analysis-revealing-the-ovule-abortion-in-the-female-sterile-line-of-pinus-tabulaeformis-carr
#18
Min Zhang, Xiaoxin Song, Kun Lv, Yang Yao, Zaixin Gong, Caixia Zheng
Ovule abortion affects the yield and quality of Pinus tabulaeformis Carr. seeds. Research into ovule abortion has importance for improving the seed setting rate and establishing artificial seed production techniques. Fertile line (FL) ovules (FL-E) and sterile line (SL) ovules (SL-E) in the early stage of free nuclear mitosis of megagametophyte (FNMM), FL ovules (FL-L) and SL ovules (SL-L) in the late stage of FNMM of P. tabulaeformis were collected as materials. 4192 proteins were identified by isobaric tags for relative and absolute quantitation (iTRAQ)-based analysis...
July 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28554404/original-descriptions-of-the-relationship-between-epididymal-function-and-sperm-morphology
#19
EDITORIAL
Martin Kathrins
Roussel JD, Stallcup OT, Austin CR. Selective phagocytosis of spermatozoa in the epididymis of bulls, rabits, and monkeys. Fertil Steril 1967;18(4):509-16. "Examination of histologic sections of epididymes revealed the presence of many macrophages in the lumen of all regions, and it was often possible to discern parts of engulfed spermatozoa within the macrophages."
May 26, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28551417/expression-profiles-of-a-cytoplasmic-male-sterile-line-of-gossypium-harknessii-and-its-fertility-restorer-and-maintainer-lines-revealed-by-rna-seq
#20
Zongfu Han, Yuxiang Qin, Yongsheng Deng, Fanjin Kong, Zongwen Wang, Guifang Shen, Jinghui Wang, Bing Duan, Ruzhong Li
The Gossypium harknessii background cytoplasmic male sterility (CMS) system has been used in cotton hybrid breeding in China. However, the mechanism underlying pollen abortion and fertility restoration in CMS remains to be determined. In this study, we used RNA-seq to identify critical genes and pathways associated with CMS in G. harknessii based CMS lines (588A), the near isogenic restorer lines (588R), and maintainer lines (588B). We performed an assembly of 80,811,676 raw reads into 89,939 high-quality unigenes with an average length of 698 bp...
April 20, 2017: Plant Physiology and Biochemistry: PPB
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