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https://www.readbyqxmd.com/read/29989186/lipidomic-reprogramming-associated-with-drought-stress-priming-enhanced-heat-tolerance-in-tall-fescue-festuca-arundinacea
#1
Xiaxiang Zhang, Yi Xu, Bingru Huang
Stress priming by exposing plants to a mild or moderate drought could enhance plant tolerance to subsequent heat stress. Lipids play vital roles in stress adaptation, but how lipidomic profiles change, affecting the cross-stress tolerance, is largely unknown. The objectives of this study were to perform lipidomics, to analyse the content, composition, and saturation levels of lipids in leaves of tall fescue (Festuca arundinacea) following drought priming and subsequent heat stress, and to identify major lipids and molecular species associated with priming-enhanced heat tolerance...
July 10, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29857479/alteration-of-transcripts-of-stress-protective-genes-and-transcriptional-factors-by-%C3%AE-aminobutyric-acid-gaba-associated-with-improved-heat-and-drought-tolerance-in-creeping-bentgrass-agrostis-stolonifera
#2
Zhou Li, Yan Peng, Bingru Huang
Gamma-aminobutyric acid (GABA) may play a positive role in regulating plant tolerance to drought or heat stress. The objectives of this study were to investigate the physiological effects of GABA on tolerance of creeping bentgrass ( Agrostis stolonifera ) to heat and drought stress and to determine whether enhanced heat and drought tolerance due to GABA treatment was associated with the up-regulation of selected genes and transcriptional factors involved in stress protection. Creeping bentgrass (cultivar "Penncross") plants were treated with 0...
May 31, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29650155/strigolactones-and-interaction-with-auxin-regulating-root-elongation-in-tall-fescue-under-different-temperature-regimes
#3
Qiannan Hu, Shuoxin Zhang, Bingru Huang
Strigolactones (SL) have recently been found to play roles in regulating root development. However, it remains unclear how SL may mediate root elongation of perennial grass species under different temperatures that differentially affect root growth. The objectives of this study were to examine effects of SL on root elongation of tall fescue and to examine the interactive effects of SL and auxin in regulating root growth under both non-stress and heat stress conditions. Tall fescue (cv. 'Kentuck-31') plants were treated with GR24 (a synthetic strigolactones), NAA (α-naphthylacetic acid), or NPA (auxin transport inhibitor N-1-naphthylphalamic acid) or their combination under non-stress control and heat stress (35/30 °C) in growth chamber...
June 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29402224/the-optimal-co-2-concentrations-for-the-growth-of-three-perennial-grass-species
#4
Yunpu Zheng, Fei Li, Lihua Hao, Arshad Ali Shedayi, Lili Guo, Chao Ma, Bingru Huang, Ming Xu
BACKGROUND: Grasslands are one of the most representative vegetation types accounting for about 20% of the global land area and thus the response of grasslands to climate change plays a pivotal role in terrestrial carbon balance. However, many current climate change models, based on earlier results of the doubling-CO2 experiments, may overestimate the CO2 fertilization effect, and as a result underestimate the potentially effects of future climate change on global grasslands when the atmospheric CO2 concentration goes beyond the optimal level...
February 5, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29357827/transcriptomic-analysis-reveals-unique-molecular-factors-for-lipid-hydrolysis-secondary-cell-walls-and-oxidative-protection-associated-with-thermotolerance-in-perennial-grass
#5
Yi Xu, Bingru Huang
BACKGROUND: Heat stress is the primary abiotic stress limiting growth of cool-season grass species. The objective of this study was to determine molecular factors and metabolic pathways associated with superior heat tolerance in thermal bentgrass (Agrostis scabra) by comparative analysis of transcriptomic profiles with its co-generic heat-sensitive species creeping bentgrass (A. stolonifera). RESULTS: Transcriptomic profiling by RNA-seq in both heat-sensitive A...
January 22, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29301249/candidate-genes-and-molecular-markers-correlated-to-physiological-traits-for-heat-tolerance-in-fine-fescue-cultivars
#6
Yi Xu, Jinyu Wang, Stacy A Bonos, William A Meyer, Bingru Huang
Heat stress is one of the major abiotic factors limiting the growth of cool-season grass species during summer season. The objectives of this study were to assess genetic variations in the transcript levels of selected genes in fine fescue cultivars differing in heat tolerance, and to identify single nucleotide polymorphism (SNP) markers associated with candidate genes related to heat tolerance. Plants of 26 cultivars of five fine fescue species ( Festuca spp.) were subjected to heat stress (38/33 °C, day/night temperature) in controlled environmental growth chambers...
January 1, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29245768/non-bleaching-fluorescence-emission-difference-microscopy-using-single-808-nm-laser-excited-red-upconversion-emission
#7
Qiusheng Wu, Bingru Huang, Xingyun Peng, Sailing He, Qiuqiang Zhan
Optical super-resolution microscopy has become a powerful technique to help scientists to monitor the sample of interest at nanoscale. Fluorescence emission difference (FED) microscopy, a very facile super-resolution method, does not require high depleting laser intensity and is independent on the species of agents, which makes FED microscopy possess great potential. However, to date, the biomarkers applied in FED microscopy usually suffer from a photo-bleaching problem. In this work, by introducing Er3+ activated upconverting nanoparticles with red-color emission and non-photobleaching properties, we demonstrate nonbleaching super-resolution imaging with FED microscopy...
December 11, 2017: Optics Express
https://www.readbyqxmd.com/read/29123463/switchgrass-pvdreb1c-plays-opposite-roles-in-plant-cold-and-salt-tolerance-in-transgenic-tobacco
#8
Wuwu Wen, Zheni Xie, Guohui Yu, Chengliang Zhao, Jing Zhang, Linkai Huang, Bin Xu, Bingru Huang
Background: The C-repeat-binding factors/DRE-binding factors (CBF/DREBs) comprise a key transcription factor family involved in plant stress tolerance. Yet, there is limited information about switchgrass DREB genes and their functional roles. Results: In this study, four cold-inducible PvDREB1s were identified from switchgrass ( Panicum virgatum ), among which PvDREB1C was the one responded to cold stress later than the other three PvDREB1s . Yet, ectopic overexpression of PvDREB1C led to significantly compromised, instead of improved cold tolerance in transgenic tobacco...
2018: Hereditas
https://www.readbyqxmd.com/read/29051497/achieving-high-efficiency-emission-depletion-nanoscopy-by-employing-cross-relaxation-in-upconversion-nanoparticles
#9
Qiuqiang Zhan, Haichun Liu, Baoju Wang, Qiusheng Wu, Rui Pu, Chao Zhou, Bingru Huang, Xingyun Peng, Hans Ågren, Sailing He
Stimulated emission depletion microscopy provides a powerful sub-diffraction imaging modality for life science studies. Conventionally, stimulated emission depletion requires a relatively high light intensity to obtain an adequate depletion efficiency through only light-matter interaction. Here we show efficient emission depletion for a class of lanthanide-doped upconversion nanoparticles with the assistance of interionic cross relaxation, which significantly lowers the laser intensity requirements of optical depletion...
October 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28974955/metabolic-pathways-involved-in-carbon-dioxide-enhanced-heat-tolerance-in-bermudagrass
#10
Jingjin Yu, Ran Li, Ningli Fan, Zhimin Yang, Bingru Huang
Global climate changes involve elevated temperature and CO2 concentration, imposing significant impact on plant growth of various plant species. Elevated temperature exacerbates heat damages, but elevated CO2 has positive effects on promoting plant growth and heat tolerance. The objective of this study was to identify metabolic pathways affected by elevated CO2 conferring the improvement of heat tolerance in a C4 perennial grass species, bermudagrass (Cynodon dactylon Pers.). Plants were planted under either ambient CO2 concentration (400 μmol⋅mol-1) or elevated CO2 concentration (800 μmol⋅mol-1) and subjected to ambient temperature (30/25°C, day/night) or heat stress (45/40°C, day/night)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28914758/up-regulation-of-hsfa2c-and-hsps-by-aba-contributing-to-improved-heat-tolerance-in-tall-fescue-and-arabidopsis
#11
Xiuyun Wang, Lili Zhuang, Yi Shi, Bingru Huang
Abscisic acid (ABA) is known to play roles in regulating plant tolerance to various abiotic stresses, but whether ABA's effects on heat tolerance are associated with its regulation of heat stress transcription factors (HSFs) and heat shock proteins (HSPs) is not well documented. The objective of this study was to determine whether improved heat tolerance of tall fescue ( Festuca arundinacea Schreb.) by ABA was through the regulation of HSFs and HSPs. ABA-responsive transcriptional factors, ABA-responsive element binding protein 3 (FaAREB3) and dehydration-responsive element binding protein 2A (FaDREB2A) of tall fescue, were able to bind to the cis -elements in the promoter of tall fescue heat stress transcription factor A2c (Fa HSFA2c )...
September 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28813015/transcriptional-responses-of-creeping-bentgrass-to-2-3-butanediol-a-bacterial-volatile-compound-bvc-analogue
#12
Yi Shi, Kuiju Niu, Bingru Huang, Wenhui Liu, Huiling Ma
Bacterial volatile compounds (BVCs) have been reported to enhance plant growth and elicit plant defenses against fungal infection and insect damage. The objective of this study was to determine transcriptomic changes in response to synthetic BVC that could be associated with plant resistance to Rhizoctonia solani in creeping bentgrass. The 2,3-butanediol (BD) (250 µM) was sprayed on creeping bentgrass leaves grown in jam jars. The result showed that synthetic BD induced plant defense against R. solani for creeping bentgrass...
August 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28744300/metabolic-effects-of-acibenzolar-s-methyl-for-improving-heat-or-drought-stress-in-creeping-bentgrass
#13
David Jespersen, Jingjin Yu, Bingru Huang
Acibenzolar-S-methyl (ASM) is a synthetic functional analog of salicylic acid which can induce systemic acquired resistance in plants, but its effects on abiotic stress tolerance is not well known. The objectives of this study were to examine effects of acibenzolar-S-methyl on heat or drought tolerance in creeping bentgrass (Agrostis stolonifera) and to determine major ASM-responsive metabolites and proteins associated with enhanced abiotic stress tolerance. Creeping bentgrass plants (cv. 'Penncross') were foliarly sprayed with ASM and were exposed to non-stress (20/15°C day/night), heat stress (35/30°C), or drought conditions (by withholding irrigation) in controlled-environment growth chambers...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28635628/identification-and-validation-of-reference-genes-for-seashore-paspalum-response-to-abiotic-stresses
#14
Yu Liu, Jun Liu, Lei Xu, Hui Lai, Yu Chen, Zhimin Yang, Bingru Huang
Seashore paspalum ( Paspalum vaginatum ) is among the most salt- and cadmium-tolerant warm-season perennial grass species widely used as turf or forage. The objective of this study was to select stable reference genes for quantitative real-time polymerase chain reaction (qRT-PCR) analysis of seashore paspalum in response to four abiotic stresses. The stability of 12 potential reference genes was evaluated by four programs (geNorm, NormFinder, BestKeeper, and RefFinder). U2AF combined with glyceraldehyde-3-phosphate dehydrogenase (GAPDH) showed stable expression in Cd-treated leaves and cold-treated roots...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28592987/an-efficient-protocol-for-perennial-ryegrass-mesophyll-protoplast-isolation-and-transformation-and-its-application-on-interaction-study-between-lpnol-and-lpnyc1
#15
Guohui Yu, Qiang Cheng, Zheni Xie, Bin Xu, Bingru Huang, Bingyu Zhao
BACKGROUND: Perennial ryegrass (Lolium perenne L.) is an important temperate grass used for turf and forage purposes. With the increasing accumulation of genomic and transcriptomic data of perennial ryegrass, an efficient protoplast and transient gene expression protocol is highly desirable for in vivo gene functional studies in its homologous system. RESULTS: In this report, a highly efficient protoplast isolation (5.6 × 10(7) protoplasts per gram of leaf material) and transient expression (plasmid transformation efficiency at 55...
2017: Plant Methods
https://www.readbyqxmd.com/read/28543596/transcriptional-regulation-of-hormone-synthesis-and-signaling-pathways-by-overexpressing-cytokinin-synthesis-contributes-to-improved-drought-tolerance-in-creeping-bentgrass
#16
Yi Xu, Patrick Burgess, Bingru Huang
The objective of this study was to investigate transcriptomic changes and molecular factors regulated by cytokinins that may contribute to improved drought tolerance in creeping bentgrass (Agrostis stolonifera) overexpressing adenine isopentenyltransferase (ipt). Wild-type (WT) and ipt-transgenic plants were maintained well irrigated or exposed to 21 days of drought stress in growth chambers. Transcriptomic analysis conducted by RNA-seq revealed 661 and 648 upregulated and 764 and 862 downregulated drought-responsive genes (DRGs) in the WT and ipt-transgenic plants, respectively, under drought stress using adjusted P-value of 0...
October 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28187136/candidate-genes-and-molecular-markers-associated-with-heat-tolerance-in-colonial-bentgrass
#17
David Jespersen, Faith C Belanger, Bingru Huang
Elevated temperature is a major abiotic stress limiting the growth of cool-season grasses during the summer months. The objectives of this study were to determine the genetic variation in the expression patterns of selected genes involved in several major metabolic pathways regulating heat tolerance for two genotypes contrasting in heat tolerance to confirm their status as potential candidate genes, and to identify PCR-based markers associated with candidate genes related to heat tolerance in a colonial (Agrostis capillaris L...
2017: PloS One
https://www.readbyqxmd.com/read/28074175/gene-expression-analysis-of-alfalfa-seedlings-response-to-acid-aluminum
#18
Peng Zhou, Liantai Su, Aimin Lv, Shengyin Wang, Bingru Huang, Yuan An
Acid-Aluminum (Al) is toxic to plants and greatly affects crop production worldwide. To understand the responses of plants to acid soils and Aluminum toxicity, we examined global gene expression using microarray data in alfalfa seedlings with the treatment of acid-Aluminum. 3,926 genes that were identified significantly up- or downregulated in response to Al(3+) ions with pH 4.5 treatment, 66.33% of which were found in roots. Their functional categories were mainly involved with phytohormone regulation, reactive oxygen species, and transporters...
2016: International Journal of Genomics
https://www.readbyqxmd.com/read/27855226/differentially-expressed-genes-associated-with-improved-drought-tolerance-in-creeping-bentgrass-overexpressing-a-gene-for-cytokinin-biosynthesis
#19
Emily Merewitz, Yi Xu, Bingru Huang
Transformation with an isopentenyl transferase (ipt) gene controlling cytokinin (CK) synthesis has been shown to enhance plant drought tolerance. The objective of this study was to identify differentially-expressed genes (DEGs) in creeping bentgrass (Agrostis stolonifera) overexpressing ipt compared to non-transgenic plants. The ipt transgene was controlled by a senescence-activated promoter (SAG12). Both a null transformed line (NT) and SAG12-ipt plants were exposed to drought stress in an environmentally-controlled growth chamber until the soil water content declined to approximately 5% and leaf relative water content declined to 47%, which were both significantly below the well-watered controls...
2016: PloS One
https://www.readbyqxmd.com/read/27761136/exogenous-melatonin-suppresses-dark-induced-leaf-senescence-by-activating-the-superoxide-dismutase-catalase-antioxidant-pathway-and-down-regulating-chlorophyll-degradation-in-excised-leaves-of-perennial-ryegrass-lolium-perenne-l
#20
Jing Zhang, Huibin Li, Bin Xu, Jing Li, Bingru Huang
Leaf senescence is a typical symptom in plants exposed to dark and may be regulated by plant growth regulators. The objective of this study was to determine whether exogenous application of melatonin (N-acetyl-5-methoxytryptamine) suppresses dark-induced leaf senescence and the effects of melatonin on reactive oxygen species (ROS) scavenging system and chlorophyll degradation pathway in perennial grass species. Mature perennial ryegrass (Lolium perenne L. cv. 'Pinnacle') leaves were excised and incubated in 3 mM 2-(N-morpholino) ethanesulfonic buffer (pH 5...
2016: Frontiers in Plant Science
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