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https://www.readbyqxmd.com/read/28526982/pre-drought-priming-sustains-grain-development-under-post-anthesis-drought-stress-by-regulating-the-growth-hormones-in-winter-wheat-triticum-aestivum-l
#1
Muhammad Abid, Yuhang Shao, Sixi Liu, Feng Wang, Jingwen Gao, Dong Jiang, Zhongwei Tian, Tingbo Dai
Drought stress during grain filling is the most yield-damaging to wheat. Pre-drought priming facilitated the wheat plants to sustain grain development against the post-anthesis drought stress by modulating the levels of growth hormones. Post-anthesis drought stress substantially reduces grain yield in wheat (Triticum aestivum L.) due to impaired grain development associated with imbalanced levels of growth hormones. To investigate whether pre-drought priming could sustain grain development in wheat by regulating favorable levels of growth hormones under post-anthesis drought conditions, the plants of a drought-sensitive (Yangmai-16) and drought-tolerant (Luhan-7) wheat cultivar were exposed to a moderate drought stress during tillering (Feekes 2 stage) for priming, and then, a subsequent severe drought stress was applied from 7 to 14 days after anthesis...
May 19, 2017: Planta
https://www.readbyqxmd.com/read/28512462/de-novo-transcriptome-profiling-of-flowers-flower-pedicels-and-pods-of-lupinus-luteus-yellow-lupine-reveals-complex-expression-changes-during-organ-abscission
#2
Paulina Glazinska, Waldemar Wojciechowski, Milena Kulasek, Wojciech Glinkowski, Katarzyna Marciniak, Natalia Klajn, Jacek Kesy, Jan Kopcewicz
Yellow lupine (Lupinus luteus L., Taper c.), a member of the legume family (Fabaceae L.), has an enormous practical importance. Its excessive flower and pod abscission represents an economic drawback, as proper flower and seed formation and development is crucial for the plant's productivity. Generative organ detachment takes place at the basis of the pedicels, within a specialized group of cells collectively known as the abscission zone (AZ). During plant growth these cells become competent to respond to specific signals that trigger separation and lead to the abolition of cell wall adhesion...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28510189/multiple-regulatory-roles-of-ap2-erf-transcription-factor-in-angiosperm
#3
REVIEW
Chao Gu, Zhi-Hua Guo, Ping-Ping Hao, Guo-Ming Wang, Zi-Ming Jin, Shao-Ling Zhang
APETALA2/ethylene response factor (AP2/ERF) transcription factor (TF) is a superfamily in plant kingdom, which has been reported to be involved in regulation of plant growth and development, fruit ripening, defense response, and metabolism. As the final response gene in ethylene signaling pathway, AP2/ERF TF could feedback modulate phytohormone biosynthesis, including ethylene, cytokinin, gibberellin, and abscisic acid. Moreover, AP2/ERF TF also participates in response to the signals of auxin, cytokinin, abscisic acid, and jasmonate...
December 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28508121/overexpression-of-smmyb9b-enhances-tanshinone-concentration-in-salvia-miltiorrhiza-hairy-roots
#4
Jingxian Zhang, Lubin Zhou, Xiaoyu Zheng, Jinjia Zhang, Li Yang, Ronghui Tan, Shujuan Zhao
A Salvia miltiorrhiza R2R3-MYB gene, SmMYB9b , has been cloned and characterized. Overexpression of SmMYB9b resulted in a significant improvement of tanshinones, the lipophilic active ingredients in danshen hairy roots. Plant R2R3-MYB transcription factors play important roles in various physiological and biochemical processes. Danshen (Salvia miltiorrhiza bunge) is a valuable medicinal herb with tanshinones and salvianolic acids as the principal bioactive ingredients. A number of putative R2R3-MYB transcription factors have been identified in the plant, but their function remains to be studied...
May 15, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28500704/meta-analysis-of-the-transcriptome-reveals-a-core-set-of-shade-avoidance-genes-in-arabidopsis
#5
Romina Sellaro, Manuel Pacín, Jorge J Casal
The presence of neighboring vegetation modifies the light input perceived by photo-sensory receptors, initiating a signaling cascade that adjusts plant growth and physiology. Thousands of genes can change their expression during this process, but the structure of the transcriptional circuit is poorly understood. Here we present a meta-analysis of transcriptome data from Arabidopsis thaliana exposed to neighbor signals in different contexts, including organs where growth is promoted or inhibited by these signals...
May 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28499078/genome-wide-analysis-of-the-lateral-organ-boundaries-domain-lbd-gene-family-in-eucalyptus-grandis-reveals-members-that-differentially-impact-secondary-growth
#6
Qiang Lu, Fenjuan Shao, Colleen Macmillan, Iain W Wilson, Karen van der Merwe, Steven G Hussey, Alexander A Myburg, Xiaomei Dong, Deyou Qiu
Lateral Organ Boundaries Domain (LBD) proteins are plant-specific transcription factors playing crucial roles in growth and development. However, the function of LBD proteins in Eucalyptus grandis remains largely unexplored. In the present study, LBD genes in E. grandis were identified and characterized using bioinformatics approaches. Gene expression patterns in various tissues and the transcriptional responses of EgLBDs to exogenous hormones were determined by qRT-PCR. Functions of the selected EgLBDs were studied by ectopically overexpressing in a hybrid poplar (Populus alba × Populus glandulosa)...
May 12, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28496449/differences-in-flower-transcriptome-between-grapevine-clones-are-related-to-their-cluster-compactness-fruitfulness-and-berry-size
#7
Jérôme Grimplet, Javier Tello, Natalia Laguna, Javier Ibáñez
Grapevine cluster compactness has a clear impact on fruit quality and health status, as clusters with greater compactness are more susceptible to pests and diseases and ripen more asynchronously. Different parameters related to inflorescence and cluster architecture (length, width, branching, etc.), fruitfulness (number of berries, number of seeds) and berry size (length, width) contribute to the final level of compactness. From a collection of 501 clones of cultivar Garnacha Tinta, two compact and two loose clones with stable differences for cluster compactness-related traits were selected and phenotyped...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28494021/rice-black-streaked-dwarf-virus-p7-2-forms-a-scf-complex-through-binding-to-oryza-sativa-skp1-like-proteins-and-interacts-with-gid2-involved-in-the-gibberellin-pathway
#8
Tao Tao, Cui-Ji Zhou, Qian Wang, Xiang-Ru Chen, Qian Sun, Tian-Yu Zhao, Jian-Chun Ye, Ying Wang, Zong-Ying Zhang, Yong-Liang Zhang, Ze-Jian Guo, Xian-Bing Wang, Da-Wei Li, Jia-Lin Yu, Cheng-Gui Han
As a core subunit of the SCF complex that promotes protein degradation through the 26S proteasome, S-phase kinase-associated protein 1 (SKP1) plays important roles in multiple cellular processes in eukaryotes, including gibberellin (GA), jasmonate, ethylene, auxin and light responses. P7-2 encoded by Rice black streaked dwarf virus (RBSDV), a devastating viral pathogen that causes severe symptoms in infected plants, interacts with SKP1 from different plants. However, whether RBSDV P7-2 forms a SCF complex and targets host proteins is poorly understood...
2017: PloS One
https://www.readbyqxmd.com/read/28490757/transcriptome-and-metabolite-analysis-identifies-nitrogen-utilization-genes-in-tea-plant-camellia-sinensis
#9
Wei Li, Fen Xiang, Micai Zhong, Lingyun Zhou, Hongyan Liu, Saijun Li, Xuewen Wang
Applied nitrogen (N) fertilizer significantly increases the leaf yield. However, most N is not utilized by the plant, negatively impacting the environment. To date, little is known regarding N utilization genes and mechanisms in the leaf production. To understand this, we investigated transcriptomes using RNA-seq and amino acid levels with N treatment in tea (Camellia sinensis), the most popular beverage crop. We identified 196 and 29 common differentially expressed genes in roots and leaves, respectively, in response to ammonium in two tea varieties...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28487716/evolutionary-analysis-of-della-associated-transcriptional-networks
#10
Asier Briones-Moreno, Jorge Hernández-García, Carlos Vargas-Chávez, Francisco J Romero-Campero, José M Romero, Federico Valverde, Miguel A Blázquez
DELLA proteins are transcriptional regulators present in all land plants which have been shown to modulate the activity of over 100 transcription factors in Arabidopsis, involved in multiple physiological and developmental processes. It has been proposed that DELLAs transduce environmental information to pre-wired transcriptional circuits because their stability is regulated by gibberellins (GAs), whose homeostasis largely depends on environmental signals. The ability of GAs to promote DELLA degradation coincides with the origin of vascular plants, but the presence of DELLAs in other land plants poses at least two questions: what regulatory properties have DELLAs provided to the behavior of transcriptional networks in land plants, and how has the recruitment of DELLAs by GA signaling affected this regulation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28482334/the-interaction-between-foliar-ga3-application-and-arbuscular-mycorrhizal-fungi-inoculation-improves-growth-in-salinized-tomato-solanum-lycopersicum-l-plants-by-modifying-the-hormonal-balance
#11
Mouna Khalloufi, Cristina Martínez-Andújar, Mokhtar Lachaâl, Najoua Karray-Bouraoui, Francisco Pérez-Alfocea, Alfonso Albacete
The agriculture industry is frequently affected by various abiotic stresses limiting plant productivity. To decrease the negative effect of salinity and improve growth performance, some strategies have been used, such as exogenous application of plant growth regulators (i.e. gibberellic acid, GA3), or arbuscular mycorrhizal fungi (AMF) inoculation. To gain insights about the cross-talk effect of exogenous GA3 application and AMF inoculation on growth under salinity conditions, tomato plants (Solanum lycopersicum, cv...
April 28, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28482332/a-gibberellin-stimulated-transcript-osgasr1-controls-seedling-growth-and-%C3%AE-amylase-expression-in-rice
#12
Sang-Choon Lee, Soo-Jin Kim, Soon-Ki Han, Gynheung An, Seong-Ryong Kim
From a T-DNA-tagging population in rice, we identified OsGASR1 (LOC_Os03g55290), a member of the GAST (gibberellin (GA)-Stimulated Transcript) family that is induced by salt stress and ABA treatment. This gene was highly expressed in the regions of cell proliferation and panicle development, as revealed by a GUS assay of the mutant line. In the osgasr1 mutants, the second leaf blades were much longer than those of the segregating wild type due to an increase in cell length. In addition, five α-amylase genes were up-regulated in the mutants, implying that OsGASR1 is a negative regulator of those genes...
April 25, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28473818/gibberellins-producing-endophytic-fungus-porostereum-spadiceum-agh786-rescues-growth-of-salt-affected-soybean
#13
Muhammad Hamayun, Anwar Hussain, Sumera A Khan, Ho-Youn Kim, Abdul L Khan, Muhammad Waqas, Muhammad Irshad, Amjad Iqbal, Gauhar Rehman, Samin Jan, In-Jung Lee
In the pursuit of sustainable agriculture through environment and human health friendly practices, we evaluated the potential of a novel gibberellins (GAs) producing basidiomycetous endophytic fungus Porostereum spadiceum AGH786, for alleviating salt stress and promoting health benefits of soybean. Soybean seedlings exposed to different levels of NaCl stress (70 and 140 mM) under greenhouse conditions, were inoculated with the AGH786 strain. Levels of phytohormones including GAs, JA and ABA, and isoflavones were compared in control and the inoculated seedlings to understand the mechanism through which the stress is alleviated...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28448840/a-cocktail-of-volatile-compounds-emitted-from-alcaligenes-faecalis-jbcs1294-induces-salt-tolerance-in-arabidopsis-thaliana-by-modulating-hormonal-pathways-and-ion-transporters
#14
Dipto Bhattacharyya, Yong Hoon Lee
In our previous study we showed that volatile organic compounds (VOCs) from Alcaligenes faecalis JBCS1294 (JBCS1294) induced tolerance to salt stress in Arabidopsis thaliana by influencing the auxin and gibberellin pathways and upregulating the expression of key ion transporters. The aim of this study was to evaluate the contribution of each VOC and blends of the VOCs on the induction of salt tolerance and signaling pathways. The key VOCs emitted from JBCS1294 were dissolved in lanolin and applied to one side of bipartite I-plates that contained Arabidopsis seeds on Murashige and Skoog (MS) media supplemented with NaCl on the other side...
April 12, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28445402/synthesis-of-gibberellic-acid-derivatives-and-their-effects-on-plant-growth
#15
Hao Tian, Yiren Xu, Shaojin Liu, Dingsha Jin, Jianjun Zhang, Liusheng Duan, Weiming Tan
A series of novel C-3-OH substituted gibberellin derivatives bearing an amide group were designed and synthesized from the natural product gibberellic acid (GA₃). Their activities on the plant growth regulation of rice and Arabidopsis were evaluated in vivo. Among these compounds, 10d and 10f exhibited appreciable inhibitory activities on rice (48.6% at 100 μmol/L) and Arabidopsis (41.4% at 100 μmol/L), respectively. These results provide new insights into the design and synthesis of potential plant growth regulators...
April 26, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28443117/seed-biology-updates-highlights-and-new-discoveries-in-seed-dormancy-and-germination-research
#16
REVIEW
Hiroyuki Nonogaki
An understanding of the biology of seeds has been greatly advanced in recent years. The progresses, particularly in the field of seed dormancy and germination research, have been made at a remarkable speed. Some of the possible epigenetic mechanisms, including an involvement of non-coding RNA, which were predicted for DELAY OF GERMINATION1 just a few years ago, have now been demonstrated with strong molecular and genetic evidence. Imprinting, or parent-of-origin-specific gene silencing/expression, which was characterized particularly for developing seeds, was also found in imbibed seeds and suggested for dormancy mechanisms...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28441523/carbohydrates-and-gibberellins-relationship-in-potato-tuberization
#17
Hana Ševčíková, Petra Mašková, Danuše Tarkowská, Tomáš Mašek, Helena Lipavská
Potato represents the third most important crop worldwide and therefore to understand regulations of tuber onset is crucial from both theoretical and practical points of view. Photosynthesis and related carbohydrate status along with phytohormone balance belong to the essential factors in regulation of plant development including storage organ formation. In our work we used potato (Solanum tuberosum) cv. Lada and its spontaneously tuberizing mutant (ST plants) grown in vitro under low carbohydrate availability (non-inductive conditions)...
April 8, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28439285/a-quantitative-proteomic-analysis-of-brassinosteroid-induced-protein-phosphorylation-in-rice-oryza-sativa-l
#18
Yuxuan Hou, Jiehua Qiu, Yifeng Wang, Zhiyong Li, Juan Zhao, Xiaohong Tong, Haiyan Lin, Jian Zhang
The group of polyhydroxysteroid phytohormones referred to as the brassinosteroids (BRs) is known to act on plant development and the stress response. BR signal transduction relies largely on protein phosphorylation. By employing a label-free, MS (Mass Spectrometry)-based phosphoproteomic approach, we report here the largest profiling of 4,034 phosphosites on 1,900 phosphoproteins from rice young seedlings and their dynamic response to BR. 1,821 proteins, including kinases, transcription factors and core components of BR and other hormone signaling pathways, were found to be differentially phosphorylated during the BR treatment...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28432333/metabolomic-and-proteomic-analysis-of-maize-embryonic-callus-induced-from-immature-embryo
#19
Fei Ge, Hongmei Hu, Xing Huang, Yanling Zhang, Yanli Wang, Zhaoling Li, Chaoying Zou, Huanwei Peng, Lujiang Li, Shibin Gao, Guangtang Pan, Yaou Shen
The low ratio of embryonic callus (EC) induction has inhibited the rapid development of maize genetic engineering. Still, little is known to explain the genotype-dependence of EC induction. Here, we performed a large-scale, quantitative analysis of the maize EC metabolome and proteome at three typical induction stages in two inbred lines with a range of EC induction capabilities. Comparison of the metabolomes and proteomes suggests that the differential molecular responses begin at an early stage of development and continue throughout the process of EC formation...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28425831/investigating-the-phylogenetic-range-of-gibberellin-biosynthesis-in-bacteria
#20
Raimund Nagel, Reuben J Peters
Certain plant-associated microbes can produce gibberellin (GA) phytohormones, as first described for the rice fungal pathogen Gibberella fujikuroi and, more recently, for bacteria, including several rhizobia and the rice bacterial pathogen Xanthomonas oryzae pv. oryzicola. The relevant enzymes are encoded by a biosynthetic operon that exhibits both a greater phylogenetic range and scattered distribution among plant-associated bacteria. Here, the phylogenetic distribution of this operon was investigated. To demonstrate conserved functionality, the enzymes encoded by the disparate operon from X...
April 2017: Molecular Plant-microbe Interactions: MPMI
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