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https://www.readbyqxmd.com/read/27905141/first-case-of-sterility-associated-with-sex-chromosomal-abnormalities-in-a-jenny
#1
J Dorado, G Anaya, M Bugno-Poniewierska, A Molina, A Mendez-Sanchez, I Ortiz, M Moreno-Millán, M Hidalgo, P Peral García, S Demyda-Peyrás
Chromosomal abnormalities are one of the main causes of genetic infertility in horses. Currently, their detection rate is rising due to the use of new diagnostic tools employing molecular markers linked to the sex chromosome pair. Despite genetic similarities, there are no previous reports of sterility associated with chromosomal abnormalities in the domestic donkey (Equus asinus). Hereby, we determined the presence of a chromosomal mosaicism in a female donkey with reproductive problems using molecular methodologies developed for horses...
December 1, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27904810/a-preliminary-identification-of-rf-a619-a-novel-restorer-gene-for-cms-c-in-maize-zea-mays-l
#2
Liu Yongming, Zhao Zhuofan, Lu Yanli, Li Chuan, Wang Jing, Dong Boxiao, Liang Bing, Qiu Tao, Zeng Wenbing, Cao Moju
C-type cytoplasmic male sterility (CMS-C) is widely utilized for hybrid maize seed production. However, genetic mechanisms underlying the fertility restoration are very complicated. At present, there is a divergence on the number of fertility restorer genes in maize inbred line A619 for CMS-C. To further elucidate the restoring mechanism of A619, we used genetic analysis and molecular markers to confirm the restorer genes of maize inbred line A619 for C-type male sterile line C48-2 in this study. Firstly, the fertility segregations of (C48-2 × A619)F2 populations were investigated under three environments during 2013-2015...
2016: PeerJ
https://www.readbyqxmd.com/read/27896366/allelism-analysis-of-brrfp-locus-in-different-restorer-lines-and-map-based-cloning-of-a-fertility-restorer-gene-brrfp1-for-pol-cms-in-chinese-cabbage-brassica-rapa-l
#3
Huamin Zhang, Junqing Wu, Zihui Dai, Meiling Qin, Lingyu Hao, Yanjing Ren, Qingfei Li, Lugang Zhang
In Chinese cabbage, there are two Rf loci for pol CMS and one of them was mapped to a 12.6-kb region containing a potential candidate gene encoding PPR protein. In Chinese cabbage (Brassica rapa), polima cytoplasmic male sterility (pol CMS) is an important CMS type and is widely used for hybrid breeding. By extensive test crossing in Chinese cabbage, four restorer lines (92s105, 01s325, 00s109, and 88s148) for pol CMS were screened. By analyzing the allelism of the four restorer lines, it was found that 92s105, 01s325, and 00s109 had the same "restorers of fertility" (Rf) locus (designated as BrRfp1), but 88s148 had a different Rf locus (designated as BrRfp2)...
November 28, 2016: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27893173/bmp15l-figla-smc1bl-and-larp6l-are-preferentially-expressed-in-germ-cells-in-atlantic-salmon-salmo-salar-l
#4
Lene Kleppe, Rolf Brudvik Edvardsen, Tomasz Furmanek, Eva Andersson, Amélie Juanchich, Anna Wargelius
Atlantic salmon is a valuable commercial aquaculture species that would benefit economically and environmentally by controlling precocious puberty and preventing escapees from reproducing with wild populations. One solution to both these challenges is the production of sterile individuals by inhibiting the formation of germ cells, but achieving this requires more information on the specific factors that control germ cell formation. Here, we identified and characterized novel factors that are preferentially expressed in Atlantic salmon germ cells by screening for gonad-specific genes using available adult multi-tissue transcriptomes...
November 7, 2016: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/27879644/efficacy-of-topical-application-leaf-residue-or-soil-drench-of-blastospores-of-isaria-fumosorosea-for-citrus-root-weevil-management-laboratory-and-greenhouse-investigations
#5
Pasco B Avery, Wayne B Hunter, David G Hall, Mark A Jackson, Charles A Powell
The efficacy of topical, leaf residue, and soil drench applications with Isaria fumosorosea blastospores (Ifr strain 3581) was assessed for the management of the citrus root weevil, Diaprepes abbreviatus (L.). Blastospores of Ifr were applied topically at a rate of 10⁷ blastospores mL(-1) on both the larvae and adults, and each insect stage was incubated in rearing cups with artificial diet at 25 °C, either in the dark or in a growth chamber under a 16 h photophase for 2 weeks, respectively. Percent larval and adult mortality due to the infection of Ifr was assessed after 14 days as compared to untreated controls...
November 22, 2016: Insects
https://www.readbyqxmd.com/read/27874087/development-of-commercial-thermo-sensitive-genic-male-sterile-rice-accelerates-hybrid-rice-breeding-using-the-crispr-cas9-mediated-tms5-editing-system
#6
Hai Zhou, Ming He, Jing Li, Liang Chen, Zhifeng Huang, Shaoyan Zheng, Liya Zhu, Erdong Ni, Dagang Jiang, Bingran Zhao, Chuxiong Zhuang
Hybrid rice breeding offers an important strategy to improve rice production, in which the cultivation of a male sterile line is the key to the success of cross-breeding. CRISPR/Cas9 systems have been widely used in target-site genome editing, whereas their application for crop genetic improvement has been rarely reported. Here, using the CRISPR/Cas9 system, we induced specific mutations in TMS5, which is the most widely applied thermo-sensitive genic male sterility (TGMS) gene in China, and developed new "transgene clean" TGMS lines...
November 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27872859/mapping-qtls-for-fertility-restoration-of-different-cytoplasmic-male-sterility-types-in-rice-using-two-oryza-sativa-%C3%A3-o-rufipogon-backcross-inbred-line-populations
#7
Biao-Lin Hu, Jian-Kun Xie, Yong Wan, Jin-Wei Zhang, Fan-Tao Zhang, Xia Li
Hybrid rice breeding using cytoplasmic male sterility/fertility restoration (CMS/Rf) systems plays an important role in ensuring global food security. Two backcross inbred line (BIL) populations derived from either Xieqingzao B (XB)//XB/Dongxiang wild rice (DWR) (XXD) or XB//DWR/XB (XDX) were used to detect quantitative trait loci (QTLs) for fertility restoration of Dwarf wild abortive- (DA-), Indonesia Paddy- (ID-), and DWR-type CMS in rice. Lines with ID- and DA-type CMS were testcrossed with both the XXD- and XDX-BILs, while the line with DWR-type CMS was testcrossed with the XDX-BILs only...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27871243/osacos12-an-orthologue-of-arabidopsis-acyl-coa-synthetase5-plays-an-important-role-in-pollen-exine-formation-and-anther-development-in-rice
#8
Yueling Li, Dandan Li, Zongli Guo, Qiangsheng Shi, Shuangxi Xiong, Cheng Zhang, Jun Zhu, Zhongnan Yang
BACKGROUND: Sporopollenin is a major component of the pollen exine pattern. In Arabidopsis, acyl-CoA synthetase5 (ACOS5) is involved in sporopollenin precursor biosynthesis. In this study, we identified its orthologue, OsACOS12, in rice (Oryza sativa) and compared the functional conservation of ACOS in rice to Arabidopsis. RESULTS: Sequence analysis showed that OsACOS12 shares 63.9 % amino acid sequence identity with ACOS5. The osacos12 mutation caused by a pre-mature stop codon in LOC_Os04g24530 exhibits defective sexine resulting in a male sterile phenotype in rice...
November 21, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27864513/construction-of-a-male-sterility-system-for-hybrid-rice-breeding-and-seed-production-using-a-nuclear-male-sterility-gene
#9
Zhenyi Chang, Zhufeng Chen, Na Wang, Gang Xie, Jiawei Lu, Wei Yan, Junli Zhou, Xiaoyan Tang, Xing Wang Deng
The breeding and large-scale adoption of hybrid seeds is an important achievement in agriculture. Rice hybrid seed production uses cytoplasmic male sterile lines or photoperiod/thermo-sensitive genic male sterile lines (PTGMS) as female parent. Cytoplasmic male sterile lines are propagated via cross-pollination by corresponding maintainer lines, whereas PTGMS lines are propagated via self-pollination under environmental conditions restoring male fertility. Despite huge successes, both systems have their intrinsic drawbacks...
November 18, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27864010/differentially-expressed-genes-in-the-testicular-tissues-of-adenylyl-cyclase-3-knockout-mice
#10
Jing Zhang, Yuan Yuan, Qingxiu Liu, Dong Yang, Mingshen Liu, Limin Shen, Yanfen Zhou, Zhenshan Wang
Adenylate cyclase 3 (AC3) is an important component of the cyclic adenosine 3',5'-monophosphate (cAMP) signaling pathway and converts adenosine triphosphate into cAMP. Male mice with AC3 deletion (AC3(-/-)) are sterile. However, the mechanical mechanism remains unclear. By TUNEL staining, we found that cell apoptosis in the testicular tissues of AC3(-/-) mice increased significantly compared with that in the wild-type (AC3(+/+)) mice. Differentially expressed genes regulated by AC3 in the testicular tissues were identified by gene chip hybridization...
November 15, 2016: Gene
https://www.readbyqxmd.com/read/27844189/characterization-of-bcmf23a-and-bcmf23b-two-putative-pectin-methylesterase-genes-related-to-pollen-development-in-brassica-campestris-ssp-chinensis
#11
Sue Lin, Li Huang, Xiaolin Yu, Xingpeng Xiong, Xiaoyan Yue, Tingting Liu, Ying Liang, Meiling Lv, Jiashu Cao
Two homologous genes, Brassica campestris Male Fertility 23a (BcMF23a) and Brassica campestris Male Fertility 23b (BcMF23b), encoding putative pectin methylesterases (PMEs) were isolated from Brassica campestris ssp. chinensis (syn. Brassica rapa ssp. chinensis). These two genes sharing high sequence identity with each other were highly expressed in the fertile flower buds but silenced in the sterile ones of genic male sterile line system ('Bcajh97-01A/B'). Results of RT-PCR and in situ hybridization suggested that BcMF23a and BcMF23b were pollen-expressed genes, whose transcripts were first detected at the binucleate pollen and maintained throughout to the mature pollen grains...
November 14, 2016: Molecular Biology Reports
https://www.readbyqxmd.com/read/27833619/translating-the-banana-genome-to-delineate-stress-resistance-dwarfing-parthenocarpy-and-mechanisms-of-fruit-ripening
#12
REVIEW
Prasanta K Dash, Rhitu Rai
Evolutionary frozen, genetically sterile and globally iconic fruit "Banana" remained untouched by the green revolution and, as of today, researchers face intrinsic impediments for its varietal improvement. Recently, this wonder crop entered the genomics era with decoding of structural genome of double haploid Pahang (AA genome constitution) genotype of Musa acuminata. Its complex genome decoded by hybrid sequencing strategies revealed panoply of genes and transcription factors involved in the process of sucrose conversion that imparts sweetness to its fruit...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27833097/exploitation-of-heterosis-loci-for-yield-and-yield-components-in-rice-using-chromosome-segment-substitution-lines
#13
Yajun Tao, Jinyan Zhu, Jianjun Xu, Liujun Wang, Houwen Gu, Ronghua Zhou, Zefeng Yang, Yong Zhou, Guohua Liang
We constructed 128 chromosome segment substitution lines (CSSLs), derived from a cross between indica rice (Oryza sativa L.) 9311 and japonica rice Nipponbare, to investigate the genetic mechanism of heterosis. Three photo-thermo-sensitive-genic male sterile lines (Guangzhan63-4s, 036s, and Lian99s) were selected to cross with each CSSL to produce testcross populations (TCs). Field experiments were carried out in 2009, 2011, and 2015 to evaluate yield and yield-related traits in the CSSLs and TCs. Four traits (plant height, spikelet per panicle, thousand-grain weight, and grain yield per plant) were significantly related between CSSLs and TCs...
November 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27832742/comparative-transcriptome-profiling-of-the-fertile-and-sterile-flower-buds-of-a-dominant-genic-male-sterile-line-in-sesame-sesamum-indicum-l
#14
Hongyan Liu, Mingpu Tan, Haijuan Yu, Liang Li, Fang Zhou, Minmin Yang, Ting Zhou, Yingzhong Zhao
BACKGROUND: Sesame (Sesamum indicum L.) is a globally important oilseed crop with highly-valued oil. Strong hybrid vigor is frequently observed within this crop, which can be exploited by the means of genic male sterility (GMS). We have previously developed a dominant GMS (DGMS) line W1098A that has great potential for the breeding of F1 hybrids. Although it has been genetically and anatomically characterized, the underlying molecular mechanism for male sterility remains unclear and therefore limits the full utilization of such GMS line...
November 10, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27825385/neurogenomics-and-the-role-of-a-large-mutational-target-on-rapid-behavioral-change
#15
Craig E Stanley, Rob J Kulathinal
BACKGROUND: Behavior, while complex and dynamic, is among the most diverse, derived, and rapidly evolving traits in animals. The highly labile nature of heritable behavioral change is observed in such evolutionary phenomena as the emergence of converged behaviors in domesticated animals, the rapid evolution of preferences, and the routine development of ethological isolation between diverging populations and species. In fact, it is believed that nervous system development and its potential to evolve a seemingly infinite array of behavioral innovations played a major role in the successful diversification of metazoans, including our own human lineage...
November 8, 2016: Biology Direct
https://www.readbyqxmd.com/read/27811955/cytological-basis-of-sterility-in-male-and-female-hybrids-between-sibling-species-of-grey-voles-microtus-arvalis-and-m-levis
#16
Anna A Torgasheva, Pavel M Borodin
To make insight into the cytological basis of reproductive isolation, we examined chromosome synapsis and recombination in sterile male and female hybrids between Microtus arvalis and M. levis. These sibling species differ by a series of chromosomal rearrangements (fusions, inversions, centromere shifts and heterochromatin insertions). We found that meiosis in male hybrids was arrested at leptotene with complete failure of chromosome pairing and DNA double-strand breaks repair. In the female hybrids meiosis proceeded to pachytene; however, the oocytes varied in the degree of pairing errors...
November 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27795676/development-of-new-restorer-lines-for-cms-ogura-system-with-the-use-of-resynthesized-oilseed-rape-brassica-napus-l
#17
Laurencja Szała, Katarzyna Sosnowska, Wiesława Popławska, Alina Liersch, Anna Olejnik, Katarzyna Kozłowska, Jan Bocianowski, Teresa Cegielska-Taras
Resynthesized (RS) oilseed rape (Brassica napus L.) is potentially of great interest for hybrid breeding. However, a major problem with the direct use of RS B. napus is the quality of seed oil (high level of erucic acid) and seed meal (high glucosinolate content), which does not comply with double-low quality oilseed rape. Thus, additional developments are needed before RS B. napus can be introduced into breeding practice. In this study, RS oilseed rape was obtained through crosses between B. rapa ssp. chinensis var...
September 2016: Breeding Science
https://www.readbyqxmd.com/read/27793859/the-impact-of-hybridization-on-long-term-persistence-of-polyploid-dactylorhiza-species
#18
Hans Jacquemyn, Sascha van der Meer, Rein Brys
PREMISE OF THE STUDY: Hybridization may pose severe threats to the long-term survival of the parental taxa through introgression and the formation of hybrid swarms. However, when the resulting hybrids show strong male and female sterility, backcrossing and introgression are unlikely to occur, but the parental species may suffer from reduced male and female fitness. METHODS: We assessed the impact of hybridization on the long-term persistence of two food-deceptive orchids in the genus Dactylorhiza (the common Dactylorhiza maculata and the rare D...
October 2016: American Journal of Botany
https://www.readbyqxmd.com/read/27775031/evolutionary-plasticity-of-restorer-of-fertility-like-proteins-in-rice
#19
Joanna Melonek, James D Stone, Ian Small
Hybrid seed production in rice relies on cytoplasmic male sterility (CMS) induced by specific mitochondrial proteins, whose deleterious effects are suppressed by nuclear Restorer of Fertility (RF) genes. The majority of RF proteins belong to a specific clade of the RNA-binding pentatricopeptide repeat protein family. We have characterised 'restorer-of-fertility-like' (RFL) sequences from 13 Oryza genomes and the Brachypodium distachyon genome. The majority of the RFL sequences are found in genomic clusters located at two or three chromosomal loci with only a minor proportion being present as isolated genes...
October 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27744561/evolutionary-dynamics-of-meiotic-recombination-hotspots-regulator-prdm9-in-bovids
#20
Sonika Ahlawat, Sachinandan De, Priyanka Sharma, Rekha Sharma, Reena Arora, R S Kataria, T K Datta, R K Singh
Hybrid sterility or reproductive isolation in mammals has been attributed to allelic incompatibilities in a DNA-binding protein PRDM9. Not only is PRDM9 exceptional in being the only known 'speciation gene' in vertebrates, but it is also considered to be the fastest evolving gene in the genome. The terminal zinc finger (ZF) domain of PRDM9 specifies genome-wide meiotic recombination hotspot locations in mammals. Intriguingly, PRDM9 ZF domain is highly variable between as well as within species, possibly activating different recombination hotspots...
October 15, 2016: Molecular Genetics and Genomics: MGG
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