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Plant Science: An International Journal of Experimental Plant Biology

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https://www.readbyqxmd.com/read/30348332/the-loss-of-a-single-residue-from-cmftl3-leads-to-the-failure-of-florigen-to-flower
#1
Jing Sun, Peipei Cao, Lijun Wang, Sumei Chen, Fadi Chen, Jiafu Jiang
The product of CmFTL, a gene represented by multiple transcripts, is an important determinant of floral development in chrysanthemum. Here, a new transcript CmFTL3ps4 which contains three different amino acid residues compared to CmFTL3 was characterized. When driven by the Arabidopsis thaliana FT promoter, CmFTL3ps4 expression did not rescue the late flowering phenotype of the A. thaliana ft-10 mutant. When the variant sequences CmFTL3Q130K , CmFTL3G136A and CmFTL3D145N were heterologously expressed in A. thaliana, both CmFTL3G136A and CmFTL3D145N were shown to accelerate flowering, although to a different extent...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348331/type-vi-glandular-trichome-density-and-their-derived-volatiles-are-differently-induced-by-jasmonic-acid-in-developing-and-fully-developed-tomato-leaves-implications-for-thrips-resistance
#2
Gang Chen, Peter G L Klinkhamer, Rocío Escobar-Bravo, Kirsten A Leiss
Variation in the induction of plant defenses along the plant canopy can determine distribution and colonization of arthropod herbivores within the plant. In tomato, type VI glandular trichomes, which are epidermal defensive structures, and their derived volatiles are induced by the phytohormone jasmonic acid (JA). How JA-mediated induction of these trichome-associated chemical defenses depends on the leaf developmental stage and correlates with resistance against herbivory is unknown. We showed that application of JA reduced thrips-associated damage, however the amplitude of this response was reduced in the fully developed leaves compared to those still developing...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348330/low-temperature-tolerance-in-land-plants-are-transcript-and-membrane-responses-conserved
#3
REVIEW
Sunil Kumar Kenchanmane Raju, Allison C Barnes, James C Schnable, Rebecca L Roston
Plants' tolerance of low temperatures is an economically and ecologically important limitation on geographic distributions and growing seasons. Tolerance for low temperatures varies significantly across different plant species, and different mechanisms likely act in different species. In order to survive low-temperature stress, plant membranes must maintain their fluidity in increasingly cold and oxidative cellular environments. The responses of different species to low-temperature stress include changes to the types and desaturation levels of membrane lipids, though the precise lipids affected tend to vary by species...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348329/ethylene-receptors-and-related-proteins-in-climacteric-and-non-climacteric-fruits
#4
REVIEW
Yi Chen, Jérôme Grimplet, Karine David, Simone Diego Castellarin, Javier Terol, Darren C J Wong, Zhiwei Luo, Robert Schaffer, Jean-Marc Celton, Manuel Talon, Gregory Alan Gambetta, Christian Chervin
Fruits have been traditionally classified into two categories based on their capacity to produce and respond to ethylene during ripening. Fruits whose ripening is associated to a peak of ethylene production and a respiration burst are referred to as climacteric, while those that are not are referred to as non-climacteric. However, an increasing body of literature supports an important role for ethylene in the ripening of both climacteric and non-climacteric fruits. Genome and transcriptomic data have become available across a variety of fruits and we leverage these data to compare the structure and transcriptional regulation of the ethylene receptors and related proteins...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348328/water-transport-properties-of-root-cells-contribute-to-salt-tolerance-in-halophytic-grasses-poa-juncifolia-and-puccinellia-nuttalliana
#5
Maryamsadat Vaziriyeganeh, Seong Hee Lee, Janusz J Zwiazek
Plant water uptake and aquaporin-mediated root water transport are among the most salt-sensitive processes in most plants, but even relatively high salt concentrations do not appear to impair water transport processes in halophytes. To develop better understanding of these processes in halophytic plants, we compared the responses to NaCl of the two halophytic grasses varying in salt tolerance, Puccinellia nuttalliana and Poa juncifolia, with the glycophytic grass Poa pratensis. The plants were hydroponically grown and subjected to different NaCl concentrations for up to 10 days...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348327/comparisons-of-controlled-environment-and-vineyard-experiments-in-sauvignon-blanc-grapes-reveal-similar-uv-b-signal-transduction-pathways-for-flavonol-biosynthesis
#6
Linlin Liu, Scott M Gregan, Christopher Winefield, Brian Jordan
UV-B radiation is an environmental challenge affecting a number of metabolic functions in plants. Plants protect themselves from this potentially damaging radiation through synthesising UV-absorbing compounds such as flavonoids. This study aims to investigate the effect of UV-B on flavonoid biosynthesis in Sauvignon blanc grapes. In particular, a comparison has been made between controlled environment (CE) and vineyard trials to better understand molecular mechanisms of low/high fluence UV-B responses and how the results relate to each other in the context of flavonoid biosynthesis...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348326/retracted-interaction-of-athmgb15-an-arid-hmg-family-protein-with-ring-h2-type-e3-ubiquitin-ligase-atatl79
#7
Payel Ganguly, Sudip Saha, Aditya Prasad Behera, Adrita Roy, Ajit Bikram Datta, Shubho Chaudhuri
No abstract text is available yet for this article.
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348325/epigenetic-and-transcriptional-control-of-chickpea-wrky40-promoter-activity-under-fusarium-stress-and-its-heterologous-expression-in-arabidopsis-leads-to-enhanced-resistance-against-bacterial-pathogen
#8
Joydeep Chakraborty, Prithwi Ghosh, Senjuti Sen, Sampa Das
Promoters of many defense related genes are enriched with W-box elements serving as binding sites for plant specific WRKY transcription factors. In this study, expression of WRKY40 transcription factor was analyzed in two contrasting susceptible (JG62) and resistant (WR315) genotypes of chickpea infected with Foc1. The resistant plants showed up-regulation of WRKY40 under Fusarium stress, whereas in susceptible plants WRKY40 expression was absent. Additionally, global changes in the histone modification patterns were studied in above two chickpea genotypes by immunoblotting and real-time PCR analyses under control and Fusarium infected conditions...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348324/slareb1-transcriptional-activation-of-nor-is-involved-in-abscisic-acid-modulated-ethylene-biosynthesis-during-tomato-fruit-ripening
#9
Wangshu Mou, Dongdong Li, Zisheng Luo, Li Li, Linchun Mao, Tiejin Ying
Many studies have shown that abscisic acid (ABA) regulates climacteric fruits ripening by inducing ethylene production. Nevertheless, the key components involved in the crosstalk between these two phytohormones in controlling fruit ripening remain unknown. SlAREB1, a downstream transcription factor in ABA signaling pathway, has been reported to mediate ABA signaling that regulates tomato ripening through induction of ethylene biosynthetic genes. NOR, a member of NAC domain family, was proved to act upstream of ethylene and essential for ripening- and ethylene-associated genes expression...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348323/overexpression-of-smbhlh10-enhances-tanshinones-biosynthesis-in-salvia-miltiorrhiza-hairy-roots
#10
Bingcong Xing, Dongfeng Yang, Haizheng Yu, Bingxue Zhang, Kaijing Yan, Xuemin Zhang, Ruilian Han, Zongsuo Liang
The bHLH transcription factors have important role in regulation of plant growth, development, and secondary metabolism. Tanshinones are the major pharmaceutical components present in Salvia miltiorrhiza Bunge. It has been reported that bHLHs have functions in terpenoids biosynthesis. Here, we got a bHLH family member named SmbHLH10 which could positively regulate tanshinones biosynthesis in S. miltiorrhiza hairy roots. In the SmbHLH10-overexpressing line 6, four major tanshinones contents were reaching 2.51-fold (dihydrotanshinone I), 2...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348322/overexpression-of-arabidopsis-ubiquitin-ligase-atpub46-enhances-tolerance-to-drought-and-oxidative-stress
#11
Guy Adler, Amit Kumar Mishra, Tzofia Maymon, Dina Raveh, Dudy Bar-Zvi
The U-Box E3 ubiquitin ligase, AtPUB46, functions in the drought response: T-DNA insertion mutants of this single paralogous gene are hypersensitive to water- and oxidative stress (Adler et al. BMC Plant Biology 17:8, 2017). Here we analyze the phenotype of AtPUB46 overexpressing (OE) plants. AtPUB46-OE show increased tolerance to water stress and have smaller leaf blades and reduced stomatal pore area and stomatal index compared with wild type (WT). Despite this, the rate of water loss from detached rosettes is similar in AtPUB46-OE and WT plants...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348321/overexpression-of-the-mads-box-gene-k-domain-increases-the-yield-potential-of-blueberry
#12
Guo-Qing Song, Qiuxia Chen
MADS-box genes play a significant role for plant flowering. Keratin-like (K) domains are involved in protein-to-protein interactions in the formation of the MIKC-type MADS-box domain proteins. In this study, the potential of utilizing the K domain of a Vaccinium corymbosum SOC1-like gene (VcSOC1K) was investigated to modulate expression of other blueberry MADS-box genes for increasing blueberry productivity. Chilled transgenic blueberry plants overexpressing the VcSOC1K showed a significant increase in the number of canes, floral buds, and flower and fruit clusters compared to chilled non-transgenic plants...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348320/down-regulation-of-a-heavy-metal-transporter-gene-influences-several-domestication-traits-and-grain-fe-zn-content-in-rice
#13
Saivishnupriya Kappara, Sarla Neelamraju, Rajeshwari Ramanan
Biofortification of rice (Oryza sativa L.) would alleviate iron and zinc deficiencies in the target populations. We identified two alleles 261 and 284 of a Gramineae-specific heavy metal transporter gene OsHMA7 by analyzing expression patterns and sequences of genes within QTLs for high Fe & Zn, in Madhukar x Swarna recombinant inbred lines (RILs) with high (HL) or low (LL) grain Fe & Zn. Overexpression of 261 allele increased grain Fe and Zn but most of the transgenic plants either did not survive or did not yield enough seeds and could not be further characterized...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348319/ferulate-and-lignin-cross-links-increase-in-cell-walls-of-wheat-grain-outer-layers-during-late-development
#14
Anne-Laure Chateigner-Boutin, Catherine Lapierre, Camille Alvarado, Arata Yoshinaga, Cécile Barron, Brigitte Bouchet, Bénédicte Bakan, Luc Saulnier, Marie-Françoise Devaux, Christine Girousse, Fabienne Guillon
Important biological, nutritional and technological roles are attributed to cell wall polymers from cereal grains. The composition of cell walls in dry wheat grain has been well studied, however less is known about cell wall deposition and modification in the grain outer layers during grain development. In this study, the composition of cell walls in the outer layers of the wheat grain (Triticum aestivum Recital cultivar) was investigated during grain development, with a focus on cell wall phenolics. We discovered that lignification of outer layers begins earlier than previously reported and long before the grain reaches its final size...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348318/molecular-characterization-and-expression-analysis-of-the-critical-floral-gene-mdagl24-like-in-red-fleshed-apple
#15
Mengyu Su, Nan Wang, Shenghui Jiang, Hongcheng Fang, Haifeng Xu, Yicheng Wang, Zhen Zhang, Jing Zhang, Lin Xu, Zongying Zhang, Xuesen Chen
The transition from vegetative to reproductive growth is the most dramatic phase change in plants. To better understand the molecular regulation of floral transition and flower development in red-fleshed apple (Malus sieversii f. niedzwetzkyana), we isolated and characterized a floral MADS-box gene, MdAGL24-like, which shares sequence similarity with AGAMOUS-LIKE 24 (AGL24) from other species. Spatial expression analysis showed that MdAGL24-like dynamically expressed in flowers, followed by roots and fruits...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348317/apple-mderf4-negatively-regulates-salt-tolerance-by-inhibiting-mderf3-transcription
#16
Jian-Ping An, Xiao-Wei Zhang, Rui-Rui Xu, Chun-Xiang You, Xiao-Fei Wang, Yu-Jin Hao
Phytohormone ethylene is involved in salt stress response. As a key regulator of ethylene signaling, ethylene response factors (ERFs) have been reported to regulate salt stress tolerance. However, there are few studies on the relationship between ERFs in salt stress response. In this study, we isolated a salt-responsive gene MdERF4. Overexpression of MdERF4 negatively regulated salt stress tolerance and ethylene response, which was contrary to that of MdERF3 transgenic lines. Biochemical assays showed that MdERF4 directly bound to the DRE motif of MdERF3 promoter and suppressed its transcription...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348316/qtl-mapping-in-a-maize-f-2-population-using-genotyping-by-sequencing-and-a-modified-fine-mapping-strategy
#17
Jian Wang, Xuan Zhang, Zhongwei Lin
Maize possesses a tremendous genetic diversity, most of which is deposited in a large number of landraces. However, the genetic basis of local diversity from maize landrace remains largely unknown. Traditional fine mapping of the causal gene for complex trait, based on the transition from the quantitative trait locus (QTL) to a single qualitative gene through backcrossing or the construction of heterogeneous inbred family (HIF), has achieved great success in model crop rice. However, this fine-mapping strategy did not work well in maize...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348315/review-the-arabidopsis-%C3%AE-amylase-bam-gene-family-diversity-of-form-and-function
#18
REVIEW
Jonathan D Monroe, Amanda R Storm
Multi-gene families present a rich research area to study how related proteins evolve to acquire new structures and functions. The β-amylase (BAM) gene family is named for catalytic members' ability to hydrolyze starch into maltose units. However, the family also contains proteins that are catalytically inactive, have additional domains, or are not localized with a starch substrate. Here we review the current knowledge of each of the nine Arabidopsis BAMs, including information on their localization, structural features, expression patterns, regulation and potential functions...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348314/corrigendum-to-comparative-analysis-of-root-transcriptome-profiles-between-drought-tolerant-and-susceptible-wheat-genotypes-in-response-to-water-stress-plant-sci-272-2018-276-293
#19
Ling Hu, Yan Xie, Shoujin Fan, Zongshuai Wang, Fahong Wang, Bin Zhang, Haosheng Li, Jie Song, Lingan Kong
No abstract text is available yet for this article.
November 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/30348313/n-glycosylation-of-tomato-nuclease-tbn1-produced-in-n-benthamiana-and-its-effect-on-the-enzyme-activity
#20
Tomáš Podzimek, Tereza Přerovská, Jiří Šantrůček, Tomáš Kovaľ, Jan Dohnálek, Jaroslav Matoušek, Petra Lipovová
A unique analysis of an enzyme activity versus structure modification of the tomato nuclease R-TBN1 is presented. R-TBN1, the non-specific nuclease belonging to the S1-P1 nuclease family, was recombinantly produced in N. benthamiana. The native structure is posttranslationally modified by N-glycosylation at three sites. In this work, it was found that this nuclease is modified by high-mannose type N-glycosylation with a certain degree of macro- and microheterogeneity. To monitor the role of N-glycosylation in its activity, hypo- and hyperglycosylated nuclease mutants, R-TBN1 digested by α-mannosidase, and R-TBN1 deglycosylated by PNGase F were prepared...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
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