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https://www.readbyqxmd.com/read/30100918/genome-wide-linkage-mapping-reveals-qtls-for-seed-vigor-related-traits-under-artificial-aging-in-common-wheat-triticum-aestivum
#1
Jinghong Zuo, Jindong Liu, Fengmei Gao, Guihong Yin, Zhi Wang, Fengying Chen, Xiaoying Li, Jimei Xu, Tiantian Chen, Lei Li, Yu Li, Xianchun Xia, Hong Cao, Yongxiu Liu
Long-term storage of seeds leads to lose seed vigor with slow and non-uniform germination. Time, rate, homogeneity, and synchrony are important aspects during the dynamic germination process to assess seed viability after storage. The aim of this study is to identify quantitative trait loci (QTLs) using a high-density genetic linkage map of common wheat ( Triticum aestivum ) for seed vigor-related traits under artificial aging. Two hundred and forty-six recombinant inbred lines derived from the cross between Zhou 8425B and Chinese Spring were evaluated for seed storability...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30100796/grain-dormancy-genes-responsible-for-preventing-pre-harvest-sprouting-in-barley-and-wheat
#2
REVIEW
Shingo Nakamura
Pre-harvest sprouting (PHS) remains a long-standing problem for the production of barley ( Hordeum vulgare ) and wheat ( Triticum aestivum ) worldwide. Grain dormancy, a key trait for the prevention of PHS, controls the timing of germination. Discovery of the causal sequence polymorphisms (CSPs) that produce naturally occurring variation in dormancy will help improve PHS tolerance. The identification of CSPs for dormancy remains difficult, especially for barley and wheat, because they are the last major cereals to have their genomes sequenced...
June 2018: Breeding Science
https://www.readbyqxmd.com/read/30096601/nitric-oxide-alleviates-toxicity-of-hexavalent-chromium-on-tall-fescue-and-improves-performance-of-photosystem-ii
#3
Meiyu Huang, Honglian Ai, Xiaoxiang Xu, Ke Chen, Hong Niu, Huihui Zhu, Jie Sun, Dongyun Du, Liang Chen
Tall fescue (Festuca arundinacea Schreb) was widely studied for phytoremediation of organic or heavy metal contaminated soils. However, there is still little information concerning toxicity of chromium (Cr) to tall fescue and roles of nitric oxide (NO) in plants against Cr(VI) stress. In this study, different Cr(VI) treatments (0, 1, 5 and 10 mg/L Cr(VI)) and NO treatments were applied with different combinations in hydroponics culture and their interactions to tall fescue were studied. Specifically, 100 µM sodium nitroprusside (SNP) and 100 µM NG -nitro-L-arginine-methyl ester (L-NAME) treatments were used to apply exogenous NO or inhibit synthesis of NO respectively...
August 7, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/30096586/trichoderma-harzianum-diminished-oxidative-stress-caused-by-2-4-dichlorophenoxyacetic-acid-2-4-d-in-wheat-with-insights-from-lipidomics
#4
Przemysław Bernat, Justyna Nykiel-Szymańska, Ewa Gajewska, Sylwia Różalska, Paulina Stolarek, Julia Dackowa, Mirosława Słaba
2,4-dichlorophenoxyacetic acid (2,4-D) is among the most commonly used herbicides applied for weed control during wheat cultivation. However, its application could affect wheat growth. The present study investigates the effect of the ascomycetous fungus Trichoderma harzianum on lipid peroxidation, phospholipids, signaling lipids and phospholipase D in the seedlings of wheat (Triticum aestivum L.) treated with 2,4-D (2.5 mg L-1 ). In the group of 4-day-old seedlings exposed to the herbicide, increased lipid peroxidation and inhibition of growth were observed in shoots and roots...
August 1, 2018: Journal of Plant Physiology
https://www.readbyqxmd.com/read/30094456/mapping-a-gene-on-wheat-chromosome-4bl-involved-in-a-complementary-interaction-with-adult-plant-leaf-rust-resistance-gene-lrsv2
#5
María José Diéguez, Camila Petignat, Luciana Ferella, Gabriela Fiorentino, Martha Silva, Marisol Alicia Dabove, Gustavo Iván Rosero Yañez, Micaela López, María Fernanda Pergolesi, Lorena Ingala, Alba Romina Cuyeu, Francisco Sacco
A complementary gene to LrSV2 for specific adult plant leaf rust resistance in wheat was mapped on chromosome 4BL, tightly linked to Lr12 / 31. LrSV2 is a race-specific adult plant leaf rust (Puccinia triticina) resistance gene on subdistal chromosome 3BS detected in the cross of the traditional Argentinean wheat (Triticum aestivum) variety Sinvalocho MA and the experimental line Gama6. The analysis of the cross of R46 [recombinant inbred line (RIL) derived from Sinvalocho MA carrying LrSV2 gene and the complementary gene Lrc-SV2 identified in the current paper] and the commercial variety Relmo Siriri (not carrying neither of these two genes) allowed the detection of the unlinked complementary gene Lrc-SV2 because the presence of one dominant allele of both is necessary to express the LrSV2-specific adult plant resistance...
August 9, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/30093909/developing-new-oligo-probes-to-distinguish-specific-chromosomal-segments-and-the-a-b-d-genomes-of-wheat-triticum-aestivum-l-using-nd-fish
#6
Shuyao Tang, Zongxiang Tang, Ling Qiu, Zujun Yang, Guangrong Li, Tao Lang, Wenqian Zhu, Jiehong Zhang, Shulan Fu
Non-denaturing FISH (ND-FISH) technology has been widely used to study the chromosomes of Triticeae species because of its convenience. The oligo probes for ND-FISH analysis of wheat ( Triticum aestivum L.) chromosomes are still limited. In this study, the whole genome shotgun assembly sequences (IWGSC WGA v0.4) and the first version of the reference sequences (IWGSC RefSeq v1.0) of Chinese Spring ( T. aestivum L.) were used to find new tandem repeats. One hundred and twenty oligo probes were designed according to the new tandem repeats and used for ND-FISH analysis of chromosomes of wheat Chinese Spring...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30093727/mechanisms-of-wheat-triticum-aestivum-grain-storage-proteins-in-response-to-nitrogen-application-and-its-impacts-on-processing-quality
#7
Ting Zheng, Peng-Fei Qi, Yong-Li Cao, Ya-Nan Han, Hong-Liang Ma, Zhen-Ru Guo, Yan Wang, Yuan-Yuan Qiao, Shi-Yu Hua, Hai-Yue Yu, Jiang-Ping Wang, Jing Zhu, Cai-Yi Zhou, Ya-Zhou Zhang, Qing Chen, Li Kong, Ji-Rui Wang, Qian-Tao Jiang, Ze-Hong Yan, Xiu-Jin Lan, Gao-Qiong Fan, Yu-Ming Wei, You-Liang Zheng
Basis for the effects of nitrogen (N) on wheat grain storage proteins (GSPs) and on the establishment of processing quality are far from clear. The response of GSPs and processing quality parameters to four N levels of four common wheat cultivars were investigated at two sites over two growing seasons. Except gluten index (GI), processing quality parameters as well as GSPs quantities were remarkably improved by increasing N level. N level explained 4.2~59.2% and 10.4~80.0% variability in GSPs fractions and processing quality parameters, respectively...
August 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30086362/molecular-characterization-of-the-tawtg1-in-bread-wheat-triticum-aestivum-l
#8
Han Zhang, Jian Ma, Jiajun Liu, Yang Mu, Huaping Tang, Yaxi Liu, Guangdeng Chen, Qiantao Jiang, Guoyue Chen, Yuming Wei, Youliang Zheng, Xiujin Lan
OsWTG1 (LOC_Os08g42540.1) functions as an important factor determining grain size and shape in rice. Our understanding on its ortholog in wheat, TaWTG1, is limited. Here, we identified and mapped TaWTG1 in wheat, characterized its gene and protein structures, predicted transcription factor binding sites of its promoter, and the expression patterns was also analysed bases on real-time quantitative PCR and public available microarray data. The WTG1 orthologs in barley (HvWTG1), rice (OsWTG1), Aegilops tauschii (AtWTG1), Triticum urartu (TuWTG1), Triticum turgidum (TtWTG1) and Brachypodium distachyon (BdWTG1) were also identified for comparative analyses...
August 4, 2018: Gene
https://www.readbyqxmd.com/read/30081829/unlocking-the-novel-genetic-diversity-and-population-structure-of-synthetic-hexaploid-wheat
#9
Madhav Bhatta, Alexey Morgounov, Vikas Belamkar, Jesse Poland, P Stephen Baenziger
BACKGROUND: Synthetic hexaploid wheat (SHW) is a reconstitution of hexaploid wheat from its progenitors (Triticum turgidum ssp. durum L.; AABB x Aegilops tauschii Coss.; DD) and has novel sources of genetic diversity for broadening the genetic base of elite bread wheat (BW) germplasm (T. aestivum L). Understanding the diversity and population structure of SHWs will facilitate their use in wheat breeding programs. Our objectives were to understand the genetic diversity and population structure of SHWs and compare the genetic diversity of SHWs with elite BW cultivars and demonstrate the potential of SHWs to broaden the genetic base of modern wheat germplasm...
August 6, 2018: BMC Genomics
https://www.readbyqxmd.com/read/30080611/unconventional-splicing-of-wheat-tabzip60-confers-heat-tolerance-in-transgenic-arabidopsis
#10
Xiaoli Geng, Xinshan Zang, Haoran Li, Zhenshan Liu, Aiju Zhao, Jian Liu, Huiru Peng, Yingyin Yao, Zhaorong Hu, Zhongfu Ni, Qixin Sun, Mingming Xin
Conditions that disrupt protein folding, such as heat stress, can overwhelm the capacity of cells to fold proteins, thus causing endoplasmic reticulum (ER) stress. In Arabidopsis thaliana and other plants, inositol-requiring enzyme-1 mediated unconventional splicing of bZIP60 plays a crucial role in the heat and ER stress responses. However, little is known about this pathway in wheat (Triticum aestivum), especially its importance in heat tolerance. Here, we found that heat stress induced upregulation and unconventional splicing of TabZIP60 occurred in wheat seedlings...
September 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30080608/the-heat-responsive-wheat-tarad23-rescues-developmental-and-thermotolerant-defects-of-the-rad23b-mutant-in-arabidopsis-thaliana
#11
Jun Wang, Junzhe Wang, Yunze Lu, Yan Fang, Xin Gao, Zhonghua Wang, Weijun Zheng, Shengbao Xu
High temperature severely damage the growth and development of crops with climate change. To effectively screen heat responsive proteins in wheat (Triticum aestivum L.), the isobaric tandem mass tag (TMT)-labeled quantitative proteomic analysis and quantitative real-time PCR (qRT-PCR) were performed. Here, we found that a wheat RADIATION SENSITIVE 23 protein, TaRAD23, was up-regulated at both protein and RNA levels by exposing to heat stress. Sequence homology analysis indicated that the TaRAD23 is a conserved protein, which is closely related to the Arabidopsis thaliana proteins AtRAD23B and AtRAD23A...
September 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30078329/temporal-evolution-of-copper-distribution-and-speciation-in-roots-of-triticum-aestivum-exposed-to-cuo-cu-oh-2-and-cus-nanoparticles
#12
Eleanor Spielman-Sun, Enzo Lombi, Erica Donner, Astrid Avellan, Barbara Etschmann, Daryl L Howard, Gregory V Lowry
Utilization of nanoparticles (NP) in agriculture as fertilizers or pesticides requires an understanding of the NP properties influencing their interactions with plant roots. To evaluate the influence of the solubility of Cu-based NP on Cu uptake and NP association with plant roots, wheat seedlings were hydroponically exposed to 1 mg/L of Cu NPs with different solubilities (CuO, CuS, and Cu(OH)2 ) for 1 h, then transferred to a Cu free medium for 48 h. Fresh, hydrated roots were analyzed using micro X-ray fluorescence (μ-XRF) and imaging fluorescence X-ray absorption near edge spectroscopy (XANES imaging) to provide laterally resolved distribution and speciation of Cu in roots...
August 5, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/30078068/spirillospora-tritici-sp-nov-a-novel-actinomycete-isolated-from-rhizosphere-soil-of-triticum-aestivum-l
#13
Jing Song, Jiabin Wang, Tianyu Sun, Chuang Li, Hairong He, Linlin Shi, Xiaowei Guo, Junwei Zhao, Wensheng Xiang
A Gram-positive, aerobic actinomycetes, designated strain SJ 21T , was isolated from the rhizosphere soil of Triticum aestivum L. collected from Langfang, Hebei Province, Central China. Strain SJ 21T with weak antifungal activity also contained genes (involved in antibiotics biosynthesis) of the nonribosomal peptide synthetases (NRPS), ketosynthase (KS) and methyl malonyl transferase domains (PKS-I) as well as KSα and KSβ domains (PKS-II). A polyphasic taxonomic study was carried out to establish the status of strain SJ 21T ...
August 4, 2018: Current Microbiology
https://www.readbyqxmd.com/read/30077133/identification-of-triticum-aestivum-nsltps-and-functional-validation-of-two-members-in-development-and-stress-mitigation-roles
#14
Suboot Hairat, Vinay Kumar Baranwal, Paramjit Khurana
Role of plant nsLTP in biotic stress is well reported; however, their role during abiotic stress is far from clear. This study comprises genome-wide identification of LTPs and characterizes the regulation and function of two Triticum aestivum lipid transfer proteins, TaLTP40 and TaLTP75, under stresses that influence membrane fluidity. A total of 105 LTP gene family members have been identified. The selected LTPs for functional validation were highly expressed during salt, cold and drought stress. Further, selected LTPs showed differential expression thermotolerant and thermosusceptible wheat cultivars...
July 27, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/30074999/genome-wide-identification-and-analysis-of-the-alternative-oxidase-gene-family-in-diploid-and-hexaploid-wheat
#15
Rhoda A T Brew-Appiah, Zara B York, Vandhana Krishnan, Eric H Roalson, Karen A Sanguinet
A comprehensive understanding of wheat responses to environmental stress will contribute to the long-term goal of feeding the planet. ALERNATIVE OXIDASE (AOX) genes encode proteins involved in a bypass of the electron transport chain and are also known to be involved in stress tolerance in multiple species. Here, we report the identification and characterization of the AOX gene family in diploid and hexaploid wheat. Four genes each were found in the diploid ancestors Triticum urartu, and Aegilops tauschii, and three in Aegilops speltoides...
2018: PloS One
https://www.readbyqxmd.com/read/30066901/triticum-aestivum-sprout-extract-attenuates-2-4%C3%A2-dinitrochlorobenzene%C3%A2-induced-atopic-dermatitis%C3%A2-like-skin-lesions-in-mice-and-the-expression-of-chemokines-in-human-keratinocytes
#16
Ji-Hyun Lee, Hyeon-Hui Ki, Dae-Ki Kim, Young-Mi Lee
Atopic dermatitis (AD) is a common chronic, recurring, inflammatory skin disease. A number of researchers have been seeking safe AD therapies for a long time. Triticum aestivum sprouts (TAEE), known as wheatgrass, are one of the most widely used health foods worldwide. They show numerous beneficial effects, including anticancer, anti‑inflammatory, anti‑oxidant, anti‑obesity, anti‑colitis and anti‑allergy effects; however, their effect on AD is unknown. In the present study, the anti‑AD effects of a 70% ethanol extract of TAEE were investigated in 2,4‑dinitrochlorobenzene (DNCB)‑treated mice with AD‑like skin lesions and in tumor necrosis factor (TNF)‑α‑ and interferon (IFN)‑γ‑stimulated human keratinocytes (HaCaT cells)...
July 31, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/30063203/glycomyces-dulcitolivorans-sp-nov-isolated-from-rhizosphere-soil-of-wheat-triticum-aestivum-l
#17
Shan Mu, Tianyu Sun, Yuanyuan Li, Shanwen Jiang, Xiaowei Guo, Xiangjing Wang, Junwei Zhao, Wensheng Xiang
A novel actinomycete, designated strain SJ-25T , was isolated from rhizosphere soil of wheat (Triticumaestivum L.) and characterized using a polyphasic approach. 16S rRNA gene sequence analysis indicated that strain SJ-25T belonged to the genus Glycomyces and was closely related to Glycomyces scopariae YIM 56256T (99.0 % 16S rRNA gene sequence similarity), Glycomyces artemisiae IXS4T (98.8 %), Glycomyces sambucus E71T (98.7 %) and Glycomyces mayteni YIM 61331T (98.4 %). Moreover, key morphological and chemotaxonomic properties also confirmed the affiliation of strain SJ-25T to the genus Glycomyces...
July 31, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/30059605/effects-of-continuous-versus-pulsed-drought-stress-on-physiology-and-growth-of-wheat
#18
Jana Stallmann, Rabea Schweiger, Caroline Müller
In the course of climate change, crop plants are exposed to both altered precipitation volumes and frequencies in many cultivation areas. Reduced water availability and longer periods without precipitation can lead to changes in plant physiology and productivity. In this greenhouse study, we investigated physiological responses including maximum quantum yield of photosystem II (Fv /Fm ) and water use efficiency (WUE) as well as diverse productivity-related parameters including grain yield per plant to continuous (irrigated three times a week) versus pulsed (once a week) irrigation in spring wheat (Triticum aestivum L...
July 30, 2018: Plant Biology
https://www.readbyqxmd.com/read/30059150/nutritional-quality-and-antioxidant-activity-of-wheatgrass-triticum-aestivum-unwrap-by-proteome-profiling-and-dpph-and-frap-assays
#19
Santosh B Parit, Vishal V Dawkar, Rahul S Tanpure, Sandeep R Pai, Ashok D Chougale
Precious contribution of plants in the field of medicine is very well known. Wheat (Triticum aestivum) seeds and seedlings are an important source of food and feed due to the presence of various health-promoting compounds. Proteomic analysis of three seed developmental stages (0, 8, and 16 days after germination [DAG]) of wheat was carried out using liquid chromatography-mass spectrometry. A total of 297 proteins were identified and their functional annotation revealed that a majority of them were involved in preventing many diseases, oxidative stress, primary metabolism, storage, and energy related mechanisms...
July 30, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/30055183/whole-root-system-water-conductance-responds-to-both-axial-and-radial-traits-and-network-topology-over-natural-range-of-trait-variation
#20
Martin Bouda, Craig Brodersen, James Saiers
Current theory and supporting research suggests that radial transport is the most limiting factor to root water uptake, raising the question whether only absorbing root length and radial conductivity matter to water uptake. Here, we extended the porous pipe analytical model of root water uptake to entire root networks in 3D and analysed the relative importance of axial and radial characteristics to total uptake over parameter ranges reported in the literature. We found that network conductance can be more sensitive to axial than radial conductance of absorbing roots...
July 25, 2018: Journal of Theoretical Biology
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