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Journal of Plant Physiology

K V Kiselev, V P Grigorchuk, Z V Ogneva, A R Suprun, A S Dubrovina
This study examines the effects of p-coumaric (CoA) and caffeic (CaA) acids on stilbene biosynthesis in one-year-old needles of Picea jezoensis (Lindl. et Gord.) Fisch ex Carr. under control conditions and after ultraviolet (UV-C) irradiation. HPLC analysis revealed that while UV-C irradiation slightly affected the total stilbene content, CoA and CaA feeding increased the total content of stilbenes by 1.2-1.3-fold. UV-C treatment combined with CoA-feeding of the P. jezoensis cuttings exerted the most pronounced stimulatory effect on stilbene accumulation leading to the total stilbene content of 9...
February 14, 2019: Journal of Plant Physiology
Izhar Muhammad, Wen-Qiang Li, Xiu-Qing Jing, Meng-Ru Zhou, Abdullah Shalmani, Muhammad Ali, Xiao-Yong Wei, Rahat Sharif, Wen-Ting Liu, Kun-Ming Chen
The GASA (GA-stimulated Arabidopsis) gene family is highly specific to plants, signifying a crucial role in plant growth and development. Herein, we retrieved 119 GASA genes in 10 different plant species in two major lineages (monocots and eudicots). Further, in the phylogenetic tree we classified these genes into four well-conserved subgroups. All the proteins contain a conserved GASA domain with similar characteristics and a highly specific 12-cysteine residue of the C-terminus position. According to the global microarray data and qRT-PCR based analysis, the OsGASA gene family was dominantly expressed in the seedling and transition phase of floral stages...
February 13, 2019: Journal of Plant Physiology
Vahid Tavallali, Soheil Karimi
The effects of methyl jasmonate (MeJA) foliar application (0, 0.025, 0.050 and 0.075 mM) on the growth and physiological responses of two almond rootstocks (GF677 and bitter almond) exposed to various concentrations of NaCl in irrigation water (0, 50, 100 and 150 mM) were evaluated. 60 days after salt stress exposure, the mitotic index of root apical meristem cells as well as shoot and root growth, activity of main antioxidant enzymes, gas exchange parameters and contents of cytokinins and ABA were determined...
February 5, 2019: Journal of Plant Physiology
Jugang Wang, Xiaomin Gao, Zhiling Ma, Jing Chen, Yanan Liu
Fruit cracking is a serious problem in Litchi chinensis cv. Baitangying orchards, but few advances have been made in understanding the molecular basis of cracking susceptibility in 'Baitangying'. In this work, we conducted transcriptome and quantitative proteome analyses of the pericarps of three kinds of litchi: noncracking 'Feizixiao' (cracking-resistant cultivar, F), noncracking 'Baitangying' (B), and cracking 'Baitangying' (CB). A total of 101 genes and 14 proteins with the same regulatory changes were found to overlap between CB vs...
February 1, 2019: Journal of Plant Physiology
Huapeng Zhou, Hongqin Duan, Yunhong Liu, Xia Sun, Jinfeng Zhao, Honghui Lin
The plant patellin (PATL) proteins are yeast Sec14 protein (Sec14p)-like phosphatidylinositol transfer proteins (PITPs), which are widely distributed across the plant kingdom. The model plant Arabidopsis has six PATL members (designated as PATL1-PATL6). Accumulated evidence has indicated the involvement of Arabidopsis PATLs in various biological processes. This mini-review briefly summarizes our current knowledge on individual PATLs regarding their roles in plant development and stress tolerance regulation...
January 24, 2019: Journal of Plant Physiology
Jianbin Zeng, Zhilan Ye, Xiaoyan He, Guoping Zhang
MicroRNAs (miRNAs) have diverse and crucial roles in plant growth and development, including in the response to abiotic stresses. Although plant responses to K deficiency are well documented at the physiological and transcriptional levels, the miRNA-mediated post-transcriptional pathways are still not clearly elucidated. In this study, high-throughput sequencing and degradome analysis were performed using two barley genotypes differing in low-K tolerance (XZ149, tolerant and ZD9, sensitive), to determine the genotypic difference in miRNAs profiling...
January 16, 2019: Journal of Plant Physiology
Jorge I Moriconi, Lukasz Kotula, Guillermo E Santa-María, Timothy D Colmer
Gibberellins are central to the regulation of plant development and growth. Action of gibberellins involves the degradation of DELLA proteins, which are negative regulators of growth. In barley (Hordeum vulgare), certain mutations affecting genes involved in gibberellin synthesis or coding for the barley DELLA protein (Sln1) confer dwarfism. Recent studies have identified new alleles of Sln1 with the capacity to revert the dwarf phenotype back to the taller phenotypes. While the effect of these overgrowth alleles on shoot phenotypes has been explored, no information is available for roots...
January 15, 2019: Journal of Plant Physiology
Louis J Irving, Julia K E Vaughan, Gracialine Ong, Nicholas Schwier, Takeo Hama, Duncan D Cameron
Nutrients are heterogeneously distributed in the soil environment. Plants have evolved a variety of mechanisms to maximise their ability to compete for limited resources, with differential root growth considered among the more important mechanisms. Despite the significant costs of root growth, little data is available regarding carbon (C) allocation to roots growing in heterogeneous conditions. Here, we investigate the allocation of recently assimilated C in Poa annua plants growing in uniform or heterogeneous nutrient conditions...
January 15, 2019: Journal of Plant Physiology
Nataly Meychik, Yuliya Nikolaeva, Maria Kushunina
The role of the cell wall in short-term Ni uptake at different solution Ni levels was investigated in mung bean (Vigna radiata (L.) R. Wilczek) and wheat (Triticum aestivum L., cv. Inna). Both Ni-binding capacity of the CWs and roots are lower for wheat than for mung bean at all Ni levels in the solution. For both plants amounts of Ni associated with roots and root cell walls increased with Ni concentration. The contribution of CWs to Ni absorption by roots depends on Ni level in the medium and plant species...
January 15, 2019: Journal of Plant Physiology
Jinjin Lu, Jingjing He, Xiaosheng Zhou, Jinjin Zhong, Jiao Li, Yun-Kuan Liang
Stomata are microscopic pores on the surface of leaves through which water as vapor passes to the atmosphere and CO2 uptake for the photosynthesis. The signaling peptides of the epidermal patterning factor (EPF) family regulate stomatal development and density in Arabidopsis. Several putative homologs of EPF/EPFL exist in rice genome. To understand their possible involvement in stomatal formation, in this study we generated a series of transgenic lines including reporter promoter fusions, down-regulation and overexpression and demonstrated drastic differences in stomatal densities between different genotypes, as elevated expression of OsEPF1 or OsEPF2 greatly reduced stomatal density in rice, whereas ectopic overexpression of either OsEPF1 or OsEPF2 significantly decreased the high stomatal frequency of both mutant lines of epf2 and epf1epf2 Arabidopsis...
January 15, 2019: Journal of Plant Physiology
Shaoyun Dong, Diane M Beckles
Starch is a significant store of sugars, and the starch-sugar interconversion in source and sink tissues plays a profound physiological role in all plants. In this review, we discuss how changes in starch metabolism can facilitate adaptive changes in source-sink carbon allocation for protection against environmental stresses. The stress-related roles of starch are described, and published mechanisms by which starch metabolism responds to short- or long-term water deficit, salinity, or extreme temperatures are discussed...
January 14, 2019: Journal of Plant Physiology
M Creydt, J Vuralhan-Eckert, J Fromm, M Fischer
The effect of elevated CO2 concentration on leaves of black elder (Sambucus nigra) was investigated based on leaf gas exchange, chlorophyll content as well as on the analysis of the underlying metabolite profile of the fruits. The measurements were carried out once a month over a period of time of 4 months. The CO2 uptake rate, the transpiration rate and stomatal conductance were significantly higher in plants under ambient CO2 , in comparison to plants grown under elevated CO2 concentrations. On the other hand, at the initial phase of the experiments, the photosynthesis rate was higher in CO2 loaded plants compared to plants grown under normal conditions...
January 8, 2019: Journal of Plant Physiology
Maryam Soleimani, Faezeh Ghanati, Zahra Hajebrahimi, Abazar Hajnorouzi, Parviz Abdolmaleki, Fatemeh Zarinkamar
Studies have confirmed that on the ground, the plant cells must expend energy to maintain positional homeostasis against gravity. Under microgravity conditions, such energy may be saved for other process such as biosynthesis of beneficial metabolites for growth. This hypothesis was examined on a cell line of tobacco (Nicotiana tabacum cv. Burley 21). The cells were continuously treated with 2-D clinostat for 1 week. Exposure to clinorotation conditions increased biomass and total protein. Total content of soluble sugar also increased which may provide more precursors for Krebs cycle and adenosine triphosphate (ATP) production...
January 4, 2019: Journal of Plant Physiology
Nunzia Rendina, Maria Nuzzaci, Antonio Scopa, Ann Cuypers, Adriano Sofo
The control of plant diseases by inducing plant resistance responses represents an interesting solution to avoid yield losses and protect the natural environment. Hence, the intertwined relationships between host, pathogen and inducer are increasingly subject of investigations. Here, we report the efficacy of chitosan-elicited defense responses in Solanum lycopersicum var. cerasiforme plants against Cucumber mosaic virus (CMV). Chitosan was applied via foliar spray before the CMV inoculation to verify its effectiveness as a preventive treatment against the viral infection...
January 4, 2019: Journal of Plant Physiology
Sebastián Rubio, Ximena Noriega, Francisco J Pérez
In grapevine (Vitis vinifera L.) buds, the short day (SD)-photoperiod induces endodormancy and increases the level of ABA and the expression of ABA key biosynthesis genes, which suggests that ABA could be the mediator of the photoperiodic induction of endodormancy. In the present study, it was established that during the development of the endodormancy, the content of ABA and the accumulation of starch increased in parallel in the buds; however, these increases occurred after the buds were already in the state of endodormancy...
January 4, 2019: Journal of Plant Physiology
Kang He, Xun Zhao, Xiaoyuan Chi, Yiping Wang, Chunlin Jia, Hongpeng Zhang, Gongke Zhou, Ruibo Hu
NAC (NAM, ATAF1/2 and CUC2) proteins are key regulators of various plant stress tolerances. However, knowledge of NAC genes remains largely unknown in Miscanthus. Here, we characterized a novel NAC gene MlNAC10 from M. lutarioriparius than plays a role in abiotic stress tolerance. MlNAC10 encodes a nuclear-localized protein with a C-terminal transactivation domain, and has a specific binding affinity to the NAC recognition sequence (NACRS). Ectopic expression of MlNAC10 in Arabidopsis led to increased sensitivity to abscisic acid (ABA) at early seedling growth stages...
January 4, 2019: Journal of Plant Physiology
Fredy D A Silva, Ilka M Vasconcelos, Katia D C Saraiva, Jose H Costa, Cleberson F Fernandes, Jose T A Oliveira
Correlations between the transcriptional responses of genes that encode superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and peroxiredoxin (Prx) enzymes and Colletotrichum gloeosporioides development in cowpea leaves were assessed. Each of these genes is involved in the redox metabolism and hydrogen peroxide balance. Although electron microscopy revealed that conidia adhered to and germinated on the leaf cuticle, the inoculated cowpea leaves did not show any characteristic anthracnose symptoms...
January 2, 2019: Journal of Plant Physiology
Saskia Weber, Lutz Damerow, Achim Kunz, Michael Blanke
With the increasing use of hailnets and decrease in light availability in the ripening period of apple fruit, insufficient light exposure often causes poor colouration viz anthocyanin synthesis on certain parts of the fruit and on certain fruit within the tree. The aim of this study was to investigate the potential of improving anthocyanin synthesis, in terms of fruit colouration, the major incentive for a consumer. Therefore, the reflective ground cover Lumilys® was spread between 'Braeburn Mariri Red' apple rows under a crystalline hailnet seven weeks prior to harvest and colour measured on 240 attached apple fruit...
December 21, 2018: Journal of Plant Physiology
Shaofeng Li, Yaoxiang Zhang, Changjun Ding, Xu Gao, Ran Wang, Wenjuan Mo, Fuling Lv, Shaoli Wang, Liang Liu, Zhimin Tang, Hua Tian, Jianhui Zhang, Bingyu Zhang, Qinjun Huang, Mengzhu Lu, Ta-Na Wuyun, Zanmin Hu, Yongxiu Xia, Xiaohua Su
Proline-rich protein (PRP) is a plant cell wall associated protein. Its distinct patterns of regulation and localization studied in a number of plants indicate that it may play important roles in growth and development. However, the mechanism of how these genes control secondary cell wall development in tree species is largely unknown. Here, we report that a Populus deltoides (Marsh.) proline-rich protein gene PdPRP was preferentially expressed in immature/mature phloem and immature xylem in P. deltoides. PdPRP overexpression increased poplar plant height and diameter as well as the radial width of the phloem and xylem regions, facilitated secondary wall deposition, and induced expression of genes related to microfibril angle (MFA) and secondary wall biosynthesis...
December 19, 2018: Journal of Plant Physiology
Qianqian Wang, Shuai Liu, Chong Lu, Yumei La, Jie Dai, Hongyu Ma, Shaoxia Zhou, Feng Tan, Xiangyu Wang, Yufeng Wu, Weiwen Kong, Honggui La
CROWDED NUCLEI (CRWN) family in Arabidopsis consists of four members, CRWN1 to CRWN4. It has been previously reported that the CRWN proteins are involved in the control of nuclear morphology and degradation of ABI5. In this study, however, we discover that CRWN-family proteins are not only involved in attenuating responsiveness to abscisic acid (ABA), but also implicated in inhibiting reactive oxygen species (ROS) production and DNA damage induced by genotoxic agent methyl methanesulfonate (MMS). Our results demonstrate that three crwn double mutants, i...
December 13, 2018: Journal of Plant Physiology
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