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https://www.readbyqxmd.com/read/29331924/gene-expression-patterns-regulating-the-seed-metabolism-in-relation-to-deterioration-ageing-of-primed-mung-bean-vigna-radiata-l-seeds
#1
Satyendra Nath Sharma, Ankita Maheshwari, Chitra Sharma, Nidhi Shukla
We are proposing mechanisms to account for the loss of viability (seed deterioration/ageing) and enhancement in seed quality (post-storage priming treatment). In order to understand the regulatory mechanism of these traits, we conducted controlled deterioration (CD) test for up to 8 d using primed mung bean seeds and examined how CD effects the expression of many genes, regulating the seed metabolism in relation to CD and priming. Germination declined progressively with increased duration of CD, and the priming treatment completely/partially reversed the inhibition depending on the duration of CD...
January 5, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29330900/overexpression-of-microrna408-enhances-photosynthesis-growth-and-seed-yield-in-diverse-plants
#2
Jiawei Pan, Dahui Huang, Zhonglong Guo, Zheng Kuang, He Zhang, Xinyu Xie, Zengfeng Ma, Shaopei Gao, Manuel T Lerdau, Chengcai Chu, Lei Li
The ability of a plant to produce grain, fruit, or forage depends ultimately on photosynthesis. There have been few attempts, however, to study microRNAs, which are a class of endogenous small RNAs post-transcriptionally programming gene expression, in relation to photosynthetic traits. We focused on miR408, one of the most conserved plant miRNAs, and overexpressed it in parallel in Arabidopsis, tobacco, and rice. The transgenic plants all exhibited increased copper content in the chloroplast, elevated abundance of plastocyanin, and an induction of photosynthetic genes...
January 13, 2018: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/29330468/alteration-in-yield-and-oil-quality-traits-of-winter-rapeseed-by-lodging-at-different-planting-density-and-nitrogen-rates
#3
Shahbaz Khan, Sumera Anwar, Jie Kuai, Ali Noman, Muhammad Shahid, Mairaj Din, Ahmed Ali, Guangsheng Zhou
Lodging is a factor that negatively affects yield, seed quality, and harvest ability in winter rapeseed (Brassica napus L.). In this study, we quantified the lodging-induced yield losses, changes in fatty acid composition, and oil quality in rapeseed under different nitrogen application rates and planting densities. Field experiments were conducted in 2014-2017 for studying the effect of manually-induced lodging angles (0°, 30°, 60°, and 90°), 10, 20 and 30 d post-flowering at different densities and nitrogen application rates...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29327163/manipulating-the-phytic-acid-content-of-rice-grain-toward-improving-micronutrient-bioavailability
#4
REVIEW
Ishara Perera, Saman Seneweera, Naoki Hirotsu
Myo-inositol hexaphosphate, also known as phytic acid (PA), is the most abundant storage form of phosphorus in seeds. PA acts as a strong chelator of metal cations to form phytate and is considered an anti-nutrient as it reduces the bioavailability of important micronutrients. Although the major nutrient source for more than one-half of the global population, rice is a poor source of essential micronutrients. Therefore, biofortification and reducing the PA content of rice have arisen as new strategies for increasing micronutrient bioavailability in rice...
January 11, 2018: Rice
https://www.readbyqxmd.com/read/29325965/genome-wide-association-mapping-for-seed-protein-and-oil-contents-using-a-large-panel-of-soybean-accessions
#5
Dongmei Li, Xue Zhao, Yingpeng Han, Wenbin Li, Futi Xie
Soybean is globally cultivated primarily for its protein and oil. The protein and oil contents of the seeds are quantitatively inherited traits determined by the interaction of numerous genes. In order to gain a better understanding of the molecular foundation of soybean protein and oil content for the marker-assisted selection (MAS) of high quality traits, a population of 185 soybean germplasms was evaluated to identify the quantitative trait loci (QTLs) associated with the seed protein and oil contents. Using specific length amplified fragment sequencing (SLAF-seq) technology, a total of 12,072 single nucleotide polymorphisms (SNPs) with a minor allele frequency (MAF) ≥ 0...
January 8, 2018: Genomics
https://www.readbyqxmd.com/read/29322371/relationship-of-parental-genetic-distance-with-heterosis-and-specific-combining-ability-in-sesame-sesamum-indicum-l-based-on-phenotypic-and-molecular-marker-analysis
#6
Sarita K Pandey, Tapash Dasgupta, Abhishek Rathore, Anilkumar Vemula
The genetic distance analysis for selection of suitable parents has been established and effectively used in many crops; however, there is dearth of conclusive report of relationship of genetic distance analysis with heterosis in sesame. In the present study, an attempt was made to estimate the associations of genetic distances using SSR (GDSSR), seed-storage protein profiling (GDSDS) and agro-morphological traits (GDMOR) with hybrid performance. Seven parents were selected from 60 exotic and Indian genotypes based on genetic distance from clustering pattern based on SSR, seed-storage protein, morphological traits and per se performance...
January 10, 2018: Biochemical Genetics
https://www.readbyqxmd.com/read/29322324/molecular-mapping-of-qbk1-wd-a-major-qtl-for-bakanae-disease-resistance-in-rice
#7
Sais-Beul Lee, Yeon-Jae Hur, Jun-Hyeon Cho, Jong-Hee Lee, Tae-Heon Kim, Soo-Min Cho, You-Chun Song, Young-Su Seo, Jungkwan Lee, Tae-Sung Kim, Yong-Jin Park, Myung-Kyu Oh, Dong-Soo Park
BACKGROUND: Bakanae or foot rot disease is a prominent disease of rice caused by Gibberella fujikuroi. This disease may infect rice plants from the pre-emergence stage to the mature stage. In recent years, raising rice seedlings in seed boxes for mechanical transplanting has increased the incidence of many seedling diseases; only a few rice varieties have been reported to exhibit resistance to bakanae disease. In this study, we attempted to identify quantitative trait loci (QTLs) conferring bakanae disease resistance from the highly resistant japonica variety Wonseadaesoo...
January 10, 2018: Rice
https://www.readbyqxmd.com/read/29322322/functional-traits-can-improve-our-understanding-of-niche-and-dispersal-based-processes
#8
Feng Jiang, Yanhan Xun, Huiying Cai, Guangze Jin
Ecologists often determine the relative importance of niche- and dispersal-based processes via variation partitioning based on species composition. Functional traits and their proxies of phylogeny are expected to increase the detection of niche-based processes and reduce the unexplained variation relative to species identity. We collected eight adult tree traits and phylogenetic data of 41 species and employed a phylogenetic fuzzy weighting method to address this issue in a 9-ha temperate forest dynamics plot...
January 10, 2018: Oecologia
https://www.readbyqxmd.com/read/29321902/early-phenology-and-growth-trait-variation-in-closely-related-european-pine-species
#9
Witold Wachowiak, Annika Perry, Kevin Donnelly, Stephen Cavers
Closely related taxa occupying different environments are valuable systems for studying evolution. In this study, we examined differences in early phenology (bud set, bud burst) and early growth in a common garden trial of closely related pine species: Pinus sylvestris, P. mugo, and P. uncinata. Seeds for the trial were sourced from populations across the ranges of each species in Europe. Over first 4 years of development, clear differences were observed between species, while the most significant intraspecific differentiation was observed among plants from P...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29321897/nutrient-stoichiometry-and-land-use-rather-than-species-richness-determine-plant-functional-diversity
#10
Verena Busch, Valentin H Klaus, Caterina Penone, Deborah Schäfer, Steffen Boch, Daniel Prati, Jörg Müller, Stephanie A Socher, Ülo Niinemets, Josep Peñuelas, Norbert Hölzel, Markus Fischer, Till Kleinebecker
Plant functional traits reflect individual and community ecological strategies. They allow the detection of directional changes in community dynamics and ecosystemic processes, being an additional tool to assess biodiversity than species richness. Analysis of functional patterns in plant communities provides mechanistic insight into biodiversity alterations due to anthropogenic activity. Although studies have consi-dered of either anthropogenic management or nutrient availability on functional traits in temperate grasslands, studies combining effects of both drivers are scarce...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29321859/habitat-related-seed-germination-traits-in-alpine-habitats
#11
Maria Tudela-Isanta, Eduardo Fernández-Pascual, Malaka Wijayasinghe, Simone Orsenigo, Graziano Rossi, Hugh W Pritchard, Andrea Mondoni
Understanding the key aspects of plant regeneration from seeds is crucial in assessing species assembly to their habitats. However, the regenerative traits of seed dormancy and germination are underrepresented in this context. In the alpine zone, the large species and microhabitat diversity provide an ideal context to assess habitat-related regenerative strategies. To this end, seeds of 53 species growing in alpine siliceous and calcareous habitats (6230 and 6170 of EU Directive 92/43, respectively) were exposed to different temperature treatments under controlled laboratory conditions...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29321858/how-do-steppe-plants-follow-their-optimal-environmental-conditions-or-persist-under-suboptimal-conditions-the-differing-strategies-of-annuals-and-perennials
#12
Hocine Ait Mouheb, Leila Kadik, Cécile Hélène Albert, Rachda Berrached, Andreas Prinzing
For a species to be able to respond to environmental change, it must either succeed in following its optimal environmental conditions or in persisting under suboptimal conditions, but we know very little about what controls these capacities. We parameterized species distribution models (SDMs) for 135 plant species from the Algerian steppes. We interpreted low false-positive rates as reflecting a high capacity to follow optimal environmental conditions and high false-negative rates as a high capacity to persist under suboptimal environmental conditions...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29321600/fis-is-a-global-regulator-critical-for-modulation-of-virulence-factor-production-and-pathogenicity-of-dickeya-zeae
#13
Mingfa Lv, Yufan Chen, Lisheng Liao, Zhibin Liang, Zurong Shi, Yingxin Tang, Sixuan Ye, Jianuan Zhou, Lianhui Zhang
Dickeya zeae is the causal agent of rice foot rot disease, which has recently become a great threat to rice planting countries and regions. The pathogen produces a family of phytotoxins named zeamines that is critical for bacterial virulence, but little is known about the signaling pathways and regulatory mechanisms that govern zeamine production. In this study, we showed that a conserved transcriptional regulator Fis is involved in the regulation of zeamine production in D. zeae strain EC1. Deletion mutants were markedly attenuated in the virulence against rice seed germination...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29314549/ahas-trp-574-leu-substitution-in-raphanus-sativus-l-screening-enzyme-activity-and-fitness-cost
#14
Roman B Vercellino, Claudio E Pandolfo, Gabriela Breccia, Miguel Cantamutto, Alejandro Presotto
BACKGROUND: Feral radish (Raphanus sativus L.) is a problematic weed that has become resistant to AHAS (acetohydroxyacid synthase) inhibitor herbicides due to the Trp-574-Leu mutation. AHAS gene mutation that causes herbicide resistance may present negative pleiotropic effects on plant fitness. This study reports the effects of the Trp-574-Leu mutation on AHAS activity and reproductive traits of R. sativus. RESULTS: Eight out of 17 feral radish accessions presented resistant individuals to metsulfuron-methyl from 0...
January 3, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29307088/physiological-traits-of-endornavirus-infected-and-endornavirus-free-common-bean-phaseolus-vulgaris-cv-black-turtle-soup
#15
S Khankhum, R A Valverde
This study evaluated the physiological traits of eight lines of common bean (Phaseolus vulgaris) cv. Black Turtle Soup, four of which were double-infected with Phaseolus vulgaris endornavirus 1 and Phaseolus vulgaris endornavirus 2, and four of which were endornavirus-free. Plants from all eight lines were morphologically similar and did not show statistically significant differences in plant height, wet weight, number of days to flowering and pod formation, pods per plant, pod thickness, seed size, number of seeds per pod, and anthocyanin content...
January 6, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29305230/genome-wide-scan-for-seed-composition-provides-insights-into-soybean-quality-improvement-and-the-impacts-of-domestication-and-breeding
#16
Jiaoping Zhang, Xianzhi Wang, Yaming Lu, Siddhi J Bhusal, Qijian Song, Perry B Cregan, Yang Yen, Michael Brown, Guo-Liang Jiang
The complex genetic architecture of quality traits has hindered efforts to modify seed nutrients in soybean (Glycine max). Genome-wide association studies were conducted for the seed composition including protein, oil, fatty acids and amino acids using 313 diverse soybean germplasm accessions genotyped with a high-density SNP array. A total of 87 chromosomal regions were identified to be associated with seed composition, explaining 8-89% of genetic variances. The candidate genes GmSAT1, AK-HSDH, SACPD-C and FAD3A of known function, and putative MtN21 nodulin, FATB and steroid-5-α-reductase involved in N2 fixation, amino acid biosynthesis and fatty acid metabolism were found at the major-effect loci...
January 2, 2018: Molecular Plant
https://www.readbyqxmd.com/read/29304111/combined-bulked-segregant-sequencing-and-traditional-linkage-analysis-for-identification-of-candidate-gene-for-purple-leaf-sheath-in-maize
#17
Pengcheng Li, Cancan Du, Yingying Zhang, Shuangyi Yin, Enying Zhang, Huimin Fang, Dezhou Lin, Chenwu Xu, Zefeng Yang
Anthocyanin accumulation in various maize tissues plays important roles in plant growth and development. In addition, some color-related traits can be used as morphological markers in conventional maize breeding processes and purity identification of hybrid seeds. Here, we noticed that the leaf sheath color was controlled by a dominant gene, because purple (PSH) and green leaf sheaths (GSH) were separated at a ratio of 3:1 in an F2 population. To map the gene, an F2 and a recombinant inbred line (RIL) population were derived from a cross between inbred line T877 (PSH) and DH1M (GSH)...
2018: PloS One
https://www.readbyqxmd.com/read/29302274/detecting-the-invisible-fraction-bias-in-resurrection-experiments
#18
Arthur E Weis
The resurrection approach is a powerful tool for estimating phenotypic evolution in response to global change. Ancestral generations, revived from dormant propagules, are grown side by side with descendent generations in the same environment. Phenotypic differences between the generations can be attributed to genetic change over time. Project Baseline was established to capitalize on this potential in flowering plants. Project participants collected, froze, and stored seed from 10 or more natural populations of 61 North American plant species...
January 2018: Evolutionary Applications
https://www.readbyqxmd.com/read/29300870/thermal-acclimation-of-photosynthesis-and-respiration-of-southern-and-northern-white-spruce-seed-sources-tested-along-a-regional-climatic-gradient-indicates-limited-potential-to-cope-with-temperature-warming
#19
Lahcen Benomar, Mohammed S Lamhamedi, Steeve Pepin, André Rainville, Marie-Claude Lambert, Hank A Margolis, Jean Bousquet, Jean Beaulieu
Background and Aims: Knowledge of thermal acclimation of physiological processes of boreal tree species is necessary to determine their ability to adapt to predicted global warming and reduce the uncertainty around the anticipated feedbacks of forest ecosystems and global carbon cycle to climate change. The objective of this work was to examine the extent of thermal acclimation of net photosynthesis (An) and dark respiration (Rd) of two distant white spruce (Picea glauca) seed sources (from south and north of the commerial forest zone in Québec) in response to latitudinal and seasonal variations in growing conditions...
December 29, 2017: Annals of Botany
https://www.readbyqxmd.com/read/29291088/empirical-evidence-of-fixed-and-homeostatic-patterns-of-polyploid-advantage-in-a-keystone-grass-exposed-to-drought-and-heat-stress
#20
Robert C Godfree, David J Marshall, Andrew G Young, Cathy H Miller, Sarah Mathews
A long-standing hypothesis in evolutionary biology is that polyploid plants have a fitness advantage over diploids in climatically variable or extreme habitats. Here we provide the first empirical evidence that polyploid advantage in these environments is caused by two distinct processes: homeostatic maintenance of reproductive output under elevated abiotic stress, and fixed differences in seed development. In an outdoor climate manipulation experiment using coastal to inland Australian populations of the perennial grass Themeda triandra Forssk...
November 2017: Royal Society Open Science
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