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BMC Plant Biology

Yan-Tong Cai, Han Zhang, Yi-Ping Qi, Xin Ye, Zeng-Rong Huang, Jiu-Xin Guo, Li-Song Chen, Lin-Tong Yang
BACKGROUND: Magnesium (Mg)-deficiency is one of the most prevalent physiological disorders causing a reduction in Citrus yield and quality. 'Xuegan' (Citrus sinensis) seedlings were irrigated for 16 weeks with nutrient solution containing 2 mM (Mg-sufficiency) or 0 mM (Mg-deficiency) Mg(NO3 )2 . Thereafter, we investigated the Mg-deficient effects on gas exchange and chlorophyll a fluorescence in the upper and lower leaves, and Mg, reactive oxygen species (ROS) and methylglyoxal (MG) metabolisms in the roots, lower and upper leaves...
February 15, 2019: BMC Plant Biology
Chenghui Wang, Ge Gao, Songxiao Cao, Qunjie Xie, Hongyan Qi
BACKGROUND: Lipoxygenases (LOXs) play significant roles in abiotic stress responses, and identification of LOX gene promoter function can make an important contribution to elucidating resistance mechanisms. Here, we cloned the CmLOX08 promoter of melon (Cucumis melo) and identified the main promoter regions regulating transcription in response to signalling molecules and abiotic stresses. RESULTS: The 2054-bp promoter region of CmLOX08 from melon leaves was cloned, and bioinformatic analysis revealed that it harbours numerous cis-regulatory elements associated with signalling molecules and abiotic stress...
February 15, 2019: BMC Plant Biology
Honghong Deng, Suqiong Xiang, Qigao Guo, Weiwei Jin, Zexi Cai, Guolu Liang
BACKGROUND: Clementine mandarin (Citrus clementina Hort. ex Tan.) is one of the most famous and widely grown citrus cultivars worldwide. Variations in relation to the composition and distribution of repetitive DNA sequences that dominate greatly in eukaryote genomes are considered to be species-, genome-, or even chromosome-specific. Repetitive DNA-based fluorescence in situ hybridization (FISH) is a powerful tool for molecular cytogenetic study. However, to date few studies have involved in the repetitive elements and cytogenetic karyotype of Clementine...
February 15, 2019: BMC Plant Biology
Yafei Fan, Xiaochang Yin, Qing Xie, Youquan Xia, Zhenyu Wang, Jie Song, Yang Zhou, Xingyu Jiang
BACKGROUND: Na+ extrusion from cells is important for plant growth in high saline environments. SOS1 (salt overly sensitive 1), an Na+ /H+ antiporter located in the plasma membrane (PM), functions in toxic Na+ extrusion from cells using energy from an electrochemical proton gradient produced by a PM-localized H+ -ATPase (AHA). Therefore, SOS1 and AHA are involved in plant adaption to salt stress. RESULTS: In this study, the genes encoding SOS1 and AHA from the halophyte Sesuvium portulacastrum (SpSOS1 and SpAHA1, respectively) were introduced together or singly into Arabidopsis plants...
February 14, 2019: BMC Plant Biology
Han Wu, Huihui Li, Hong Chen, Qi Qi, Qiangqiang Ding, Juan Xue, Jing Ding, Xiangning Jiang, Xilin Hou, Yi Li
BACKGROUND: The development and ripening of fresh fruits is an important trait for agricultural production and fundamental research. Almost all plant hormones participate in this process. Strigolactones (SLs) are a new class of plant hormones that regulate plant organ development and stress tolerance, but little is known about their roles in fruit development. RESULTS: In this study, we identified SL biosynthetic and signaling genes in woodland strawberry, a typical non-climacteric fruit, and analyzed the expression patterns of these genes in different plant tissues and developing fruits...
February 14, 2019: BMC Plant Biology
Vedbar Singh Khadka, Kimberley Vaughn, Juan Xie, Padmapriya Swaminathan, Qin Ma, Grant R Cramer, Anne Y Fennell
BACKGROUND: Drought is an important constraint on grapevine sustainability. Vitis riparia, widely used in rootstock and scion breeding, has been studied in isolated leaf drying response studies; however, it is essential to identify key root and shoot water deficit signaling traits in intact plants. This information will aid improved scion and rootstock selection and management practices in grapevine. RNAseq data were generated from V. riparia roots and shoots under water deficit and well-watered conditions to determine root signaling and shoot responses to water deficit...
February 13, 2019: BMC Plant Biology
Rafael Fonseca Benevenuto, Tarald Seldal, Stein Joar Hegland, Cesar Rodriguez-Saona, Joseph Kawash, James Polashock
BACKGROUND: Bilberry (Vaccinium myrtillus L.) is one of the most abundant wild berries in the Northern European ecosystems. This species plays an important ecological role as a food source for many vertebrate and invertebrate herbivores. It is also well-recognized for its bioactive compounds, particularly substances involved in natural defenses against herbivory. These defenses are known to be initiated by leaf damage (e.g. chewing by insects) and mediated by activation of the jasmonic acid (JA) signaling pathway...
February 12, 2019: BMC Plant Biology
Solomon H Stonebloom, Henrik Vibe Scheller
BACKGROUND: Natural rubber is currently produced nearly exclusively from latex of the Para rubber tree, Hevea brasiliensis. The desire to reduce the environmental cost of rubber production, fears of pathogen susceptibility in clonal Hevea plantations, volatility in the price of natural rubber, and increasing labor costs have motivated efforts to diversify the supply of natural rubber by developing alternative rubber crops such as guayule (Parthenium argentatum Gray). In Hevea, latex is produced as an exudate following wounding while in guayule, rubber is deposited within the cortical parenchyma and its production is strongly influenced by environmental conditions...
February 12, 2019: BMC Plant Biology
Xiaoyan Quan, Jianbin Zeng, Guang Chen, Guoping Zhang
BACKGROUND: Development of crop cultivars with high low nitrogen (LN) tolerance or nitrogen use efficiency (NUE) is imperative for sustainable agriculture development. Tibetan wild barley is rich in genetic diversity and may provide elite genes for LN tolerance improvement. Little has been known about transcriptional responses of the wild barley to chronic LN stress. RESULTS: In this study, transcriptomic profiling of two Tibetan wild barley genotypes, LN- tolerant XZ149 and LN-sensitive XZ56 has been conducted using RNA-Seq to reveal the genotypic difference in response to chronic LN stress...
February 11, 2019: BMC Plant Biology
Siyao Wang, Qingyuan Tian, Shiqi Zhou, Dandan Mao, Liangbi Chen
BACKGROUND: Thermo-sensitive genetic male sterile (TGMS) lines have been widely used in two-line hybrid rice breeding. The two-line hybrids have increased rice yields substantially. However, the effect of environmental temperatures on the fertility conversion is still not fully clear. In this study, we performed a tandem mass tag (TMT)-based proteomic analysis on the anthers of the TGMS line AnnongS-1 grown under permissive (low) temperature (21 °C) and restrictive (high) temperature (> 26 °C) conditions in an attempt to explore the effect of temperature on the fertility of the male sterile line...
February 11, 2019: BMC Plant Biology
Xinxin Wu, Ting Shi, Shahid Iqbal, Yong Zhang, Lin Liu, Zhihong Gao
BACKGROUND: Long non-coding RNAs (lncRNAs) are transcripts more than 200 bp in length do not encode proteins. Up to the present, it has been reported that lncRNAs play an essential role in developmental processes through their regulatory functions. However, their characteristics, expression inheritance patterns, and functions in Prunus mume are quite unidentified. RESULTS: In this present study, we exposed the specific characters of pistil development process between single pistil cv 'Qingjia No...
February 11, 2019: BMC Plant Biology
Yujuan Zhang, Donghua Li, Rong Zhou, Xiao Wang, Komivi Dossa, Linhai Wang, Yanxin Zhang, Jingyin Yu, Huihui Gong, Xiurong Zhang, Jun You
BACKGROUND: Soil salinity is one of the major serious factors that affect agricultural productivity of almost all crops worldwide, including the important oilseed crop sesame. In order to improve salinity resistance in sesame, it is crucial to understand the molecular mechanisms underlying the adaptive response to salinity stress. RESULTS: In the present study, two contrasting sesame genotypes differing in salt tolerance were used to decipher the adaptive responses to salt stress based on morphological, transcriptome and metabolome characterizations...
February 11, 2019: BMC Plant Biology
Asfaw Degu, Uri Hochberg, Darren C J Wong, Giorgio Alberti, Naftali Lazarovitch, Enrico Peterlunger, Simone D Castellarin, Jose C Herrera, Aaron Fait
BACKGROUND: Grape leaves provide the biochemical substrates for berry development. Thus, understanding the regulation of grapevine leaf metabolism can aid in discerning processes fundamental to fruit development and berry quality. Here, the temporal alterations in leaf metabolism in Merlot grapevine grown under sufficient irrigation and water deficit were monitored from veraison until harvest. RESULTS: The vines mediated water stress gradually and involving multiple strategies: osmotic adjustment, transcript-metabolite alteration and leaf shedding...
February 11, 2019: BMC Plant Biology
Jing Li, Zhen Gao, Lu Zhou, Linzhi Li, Junhao Zhang, Yang Liu, Huoying Chen
BACKGROUND: Soil salinization is one of the most crucial abiotic stresses that limit the growth and production of eggplant. The existing researches in eggplant were mostly focused on salt-induced morphological, biochemical and physiological changes, with only limited works centered on salt-response genes in eggplant at the transcriptomic level. RESULTS: Our preliminary work found that Zhusiqie (No.118) is salt-tolerant and Hongqie (No.30) is salt-sensitive. Consequently, they were re-named as ST118 and SS30, respectively...
February 11, 2019: BMC Plant Biology
Junyu Song, Yang Wang, Yuehan Pan, Jiayin Pang, Xin Zhang, Junfeng Fan, Yi Zhang
BACKGROUND: Drought and nitrogen (N) deficiency are two major limiting factors for forest productivity in many ecosystems. Elucidating the mechanisms underlying the influence of soil N availability on drought responses of tree species is crucial to improve tree growth under drought. RESULTS: The root proliferation under drought was enhanced by adequate N application. Vessel frequency in xylem increased upon drought, with more significant increase under adequate N conditions compared with that under low N conditions, possibly leading to increased hydraulic safety...
February 8, 2019: BMC Plant Biology
Biao Lai, Li-Na Du, Bing Hu, Dan Wang, Xu-Ming Huang, Jie-Tang Zhao, Hui-Cong Wang, Gui-Bing Hu
BACKGROUND: Maturation of litchi (Litchi chinensis) fruit is characterized by dramatic changes in pigments in the pericarp and flavor compounds in the aril. Among them, the biosynthesis of anthocyanins is most noticeable. Previous studies showed that LcMYB1 and LcbHLH transcription factors participated in regulating the anthocyanin biosynthesis in litchi. However, the roles of other MYB factors remain unclear. RESULTS: In this study, we cloned and characterized the function of LcMYB5, a novel R2R3-MYB identified from litchi transcriptome...
February 7, 2019: BMC Plant Biology
Rose N Kigathi, Wolfgang W Weisser, Michael Reichelt, Jonathan Gershenzon, Sybille B Unsicker
BACKGROUND: Plants grow in multi-species communities rather than monocultures. Yet most studies on the emission of volatile organic compounds (VOCs) from plants in response to insect herbivore feeding focus on one plant species. Whether the presence and identity of neighboring plants or plant community attributes, such as plant species richness and plant species composition, affect the herbivore-induced VOC emission of a focal plant is poorly understood. METHODS: We established experimental plant communities in pots in the greenhouse where the focal plant species, red clover (Trifolium pratense), was grown in monoculture, in a two species mixture together with Geranium pratense or Dactylis glomerata, or in a mixture of all three species...
February 6, 2019: BMC Plant Biology
Monika Skorupa, Marcin Gołębiewski, Katarzyna Kurnik, Janusz Niedojadło, Jacek Kęsy, Krzysztof Klamkowski, Katarzyna Wójcik, Waldemar Treder, Andrzej Tretyn, Jarosław Tyburski
BACKGROUND: Sugar beet is a highly salt-tolerant crop. However, its ability to withstand high salinity is reduced compared to sea beet, a wild ancestor of all beet crops. The aim of this study was to investigate transcriptional patterns associated with physiological, cytological and biochemical mechanisms involved in salt response in these closely related subspecies. Salt acclimation strategies were assessed in plants subjected to either gradually increasing salt levels (salt-stress) or in excised leaves, exposed instantly to salinity (salt-shock)...
February 6, 2019: BMC Plant Biology
Teresa Pomares-Viciana, Mercedes Del Río-Celestino, Belén Román, Jose Die, Belén Pico, Pedro Gómez
BACKGROUND: Zucchini fruit set can be limited due to unfavourable environmental conditions in off-seasons crops that caused ineffective pollination/fertilization. Parthenocarpy, the natural or artificial fruit development without fertilization, has been recognized as an important trait to avoid this problem, and is related to auxin signalling. Nevertheless, differences found in transcriptome analysis during early fruit development of zucchini suggest that other complementary pathways could regulate fruit formation in parthenocarpic cultivars of this species...
February 6, 2019: BMC Plant Biology
Jianing Xu, Shanshan Xing, Qinghua Sun, Chunyan Zhan, Xin Liu, Shizhong Zhang, Xiaoyun Wang
BACKGROUND: Tubby-like proteins (TLPs), characterized by a signature tubby domain, are widespread in plants and animals. To date, only plant TLPs involved in multifarious stress responses and male gametophyte development have been identified. However, studies on the molecular functions of plant TLPs are largely unknown. RESULTS: In this investigation, the roles of a TLP from Malus domestica (MdTLP7) in response to abiotic stresses were characterized by expressing it in Arabidopsis...
February 6, 2019: BMC Plant Biology
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