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Journal of Plant Physiology

Muntazir Mushtaq, Javaid Akhter Bhat, Zahoor A Mir, Afreen Sakina, Sajad Ali, Anil Kumar Singh, Anshika Tyagi, Romesh Kumar Salgotra, Ajaz Ahmad Dar, Rohini Bhat
It is not the most grounded of the species that survive, nor the most shrewd, however one most receptive to change. Crop plants being sessile are subjected to various abiotic stresses resulting significant yield losses about an average of more than 50 percent, thus greatly threatening the global crop production. In this regard, plant breeding innovations and genetic engineering approaches have been used in the past for generating stress tolerant crop genotypes, but due to complex inheritance of abiotic stress tolerance these approaches are not enough to bring significant trait improvement and to guarantee world's future sustenance security...
April 5, 2018: Journal of Plant Physiology
Viktoria Zeisler-Diehl, Yannic Müller, Lukas Schreiber
It is well established that waxes built up the barrier properties of cuticles, since their extraction in organic solvent e.g. chloroform increases diffusion of water and organic compounds by 1-2 orders of magnitude. Leaf surface waxes can be divided in epicuticular (on the surface of the cuticular membrane) and intracuticular (embedded in the cutin polymer) waxes. Until today there are only limited investigations dealing with the question to what extent epi- or intracuticular waxes contribute to the formation of the transpiration barrier...
March 31, 2018: Journal of Plant Physiology
Na-Na Li, Chuan Yue, Hong-Li Cao, Wen-Jun Qian, Xin-Yuan Hao, Yu-Chun Wang, Lu Wang, Chang-Qing Ding, Xin-Chao Wang, Ya-Jun Yang
The tea plant originated in tropical and subtropical regions and experiences considerable challenges during cold winters and late spring frosts. After short-term chilling stress, young leaves of tea plants exhibit browning, a significant increase in electrolyte leakage and a marked decrease in the maximal photochemical efficiency of photosystem II (Fv /Fm ) compared with mature leaves. To identify the mechanisms underlying the different chilling tolerance between young and mature leaves of the tea plant, we used Illumina RNA-Seq technology to analyse the transcript expression profiles of young and mature leaves exposed to temperatures of 20 °C, 4 °C, and 0 °C for 4 h...
March 31, 2018: Journal of Plant Physiology
Mina Kafkaletou, Eleni Tsantili
Olives are non-climacteric fruit. In a previous article, oleuropein (OE) increased substantially in fresh green olives exposed to 20 °C for 7 d, but the increases were lower in preharvest treated fruit with an ethylene synthesis inhibitor. The present aim was to investigate whether phenolic compounds, including OE, were affected by ethylene treatment in green harvested olives. Postharvest treatments with the ethylene perception inhibitor, 1 -methylcyclopropene (1-MCP) at 1.5 μL L-1 for 12 h, and/or ethylene at 1000 μL L-1 at 20 °C for up to 10 d were applied to fruits of 'Konservolia' cultivar...
March 30, 2018: Journal of Plant Physiology
Federico Martinelli, Gina Cannarozzi, Bipin Balan, Fredy Siegrist, Annett Weichert, Regula Blösch, Zerihun Tadele
Tef [Eragrostis tef (Zucc.) Trotter], a staple food crop in the Horn of Africa and particularly in Ethiopia, has several beneficial agronomical and nutritional properties, including waterlogging and drought tolerance. In this study, we performed microRNA profiling of tef using the Illumina HiSeq 2500 platform, analyzing both shoots and roots of two tef genotypes, one drought-tolerant (Tsedey) and one drought-susceptible (Alba). We obtained more than 10 million filtered reads for each of the 24 sequenced small cDNA libraries...
March 29, 2018: Journal of Plant Physiology
Ryoichi Araki, Mélanie Mermod, Hiroaki Yamasaki, Takehiro Kamiya, Toru Fujiwara, Toshiharu Shikanai
In Arabidopsis, a central regulator of copper (Cu) homeostasis is the transcription factor SQUAMOSA promoter binding protein-like7 (SPL7). Under Cu deficiency, SPL7 induces the expression of miR398, which suppresses the expression of the genes CSD1 and CSD2, which encode cytosolic and chloroplastic isoforms of Cu/Zn superoxide dismutase, respectively. Consequently, the limited Cu is preferentially assigned to plastocyanin, which is essential for photosynthetic electron transport. Consistent with this function of miR398 related to photosynthesis, its expression is strongly induced in leaves...
March 29, 2018: Journal of Plant Physiology
Soad Al Jaouni, Ahmed M Saleh, Mohammed A M Wadaan, Wael N Hozzein, Samy Selim, Hamada AbdElgawad
Many studies have discussed the influence of elevated carbon dioxide (eCO2 ) on modeling and crop plants. However, much less effort has been dedicated to herbal plants. In this study, a robust monitoring for the levels of 94 primary and secondary metabolites and minerals in two medicinal herbs, basil (Ocimum basilicum L.) and peppermint (Mentha piperita L.), grwon under both ambient (aCO2 , 360 ppm) and eCO2 (620 ppm) was performed. We also assessed how the changes in herbal tissue chemistry affected their biological activity...
March 29, 2018: Journal of Plant Physiology
Hao Gu, Man Lu, Zhiping Zhang, Jinjin Xu, Wenhua Cao, Minmin Miao
Raffinose family oligosaccharides (RFOs) accumulate under stress conditions in many plants and have been suggested to act as stress protectants. To elucidate the metabolic process of RFOs under cold stress, levels of RFOs, and related carbohydrates, the expression and activities of main metabolic enzymes and their subcellular compartments were investigated during low-temperature treatment and during the recovery period in cucumber leaves. Cold stress induced the accumulation of stachyose in vacuoles, galactinol in vacuoles and cytosol, and sucrose and raffinose in vacuoles, cytosol, and chloroplasts...
March 29, 2018: Journal of Plant Physiology
Krissana Boonpa, Supaluk Tantong, Kamonwan Weerawanich, Pawinee Panpetch, Onanong Pringsulaka, Yodying Yingchutrakul, Sittiruk Roytrakul, Supaart Sirikantaramas
According to an in silico analysis, OsGASR3 (LOC_Os03g55290) from rice (Oryza sativa L.) was predicted to be involved in plant defense mechanisms. A semi-quantitative reverse transcription polymerase chain reaction assay revealed that OsGASR3 is highly expressed in the inflorescences of Thai jasmine rice (O. sativa L. subsp. indica 'KDML 105'). To characterize the biological activity of OsGASR3, we produced an OsGASR3-glutathione S-transferase fusion protein in Escherichia coli Rosetta-gami (DE3) cells for a final purified recombinant OsGASR3 yield of 0...
March 27, 2018: Journal of Plant Physiology
Karl A Wilson, Anna Tan-Wilson
Legume species differ in whether or not the 7S globulins stored in seeds undergo proteolytic processing during seed development, while preserving the bicupin structure and trimeric assembly necessary for accumulation and packing into protein storage vacuoles. Two such cleavage sites have been documented for the vicilins in pea cotyledons: one in the linker region between the two cupin domains, and another in an exposed loop in the C-terminal cupin. In this report, we explain the occurrence of vicilin cleavage in developing pea by showing that the storage vacuoles are already acidified before germination, in contrast to soybean and peanut where acidification occurs only after germination...
March 27, 2018: Journal of Plant Physiology
Rémy Rosalie, Mathieu Léchaudel, Claudie Dhuique-Mayer, Laurent Dufossé, Jacques Joas
The effects of 15 days of storage at 12 °C and 7 °C followed by fruit ripening at 20 °C on oxidative status, antioxidant defense systems and carotenoid accumulation were studied for two successive years in mango fruits (Mangifera indica L.) cv. Cogshall. Changes in the non-enzymatic (ascorbate) and enzymatic (SOD, CAT, APX, MDHAR, DHAR and GR) antioxidant systems, as well as oxidative parameters (H2 O2 and MDA) and the contents of the major carotenoids were measured for three maturity stages, at harvest and after ripening following cold temperature storage...
March 26, 2018: Journal of Plant Physiology
Ladislav Tamás, Loriana Demecsová, Veronika Zelinová
Exposure of barley roots to mM concentrations of L-NAME for 30 min caused a considerable root growth inhibition in a dose-dependent manner. The inhibition of root growth was higher in seedlings co-treated with Cd and L-NAME, compared with roots treated with Cd alone, despite the fact that L-NAME markedly reduced the uptake of Cd by roots. Treatment of roots with L-NAME evoked a decrease in NO level in both control and Cd-treated root tips only after a relatively long lag period, which overlaps with an increase in superoxide and H2 O2 levels and peroxynitrite generation...
March 22, 2018: Journal of Plant Physiology
Chae-Seong Han, Sol Kim, Sung-Eun Lee, Siyoung Choi, Soo-Hwan Kim, In Sun Yoon, Yong-Sic Hwang
Recently, much effort has been made to determine the molecular links and cross-talk between sugar and abscisic acid (ABA) signaling pathways. ABA-inducible expression of OsTIP3;1, encoding a rice tonoplast intrinsic protein, was enhanced by sugar depletion. Such a stimulatory increase in OsTIP3;1 expression under sugar-starvation is possibly not owing to changes in endogenous ABA content. The transient expression assay indicated that the 5' flanking region of OsTIP3;1 delivered similar collaborative responsiveness to starvation and ABA, suggesting that this gene promoter could be a good molecular probe to examine the interaction between sugar and ABA signaling pathways...
March 21, 2018: Journal of Plant Physiology
Lenka Plavcová, Marie Hronková, Marie Šimková, Jiří Květoň, Martina Vráblová, Jiří Kubásek, Jiří Šantrůček
The study aims to assess variability in leaf water isotopic enrichment occurring in the field under natural conditions. We focused on seasonal variation and difference between sun-exposed and shaded leaves. Isotopic composition (δ18 O, δ2 H) of leaf water was monitored in a beach tree (Fagus sylvatica L.) growing in the forest-meadow ecotone together with δ18 O (2 H) of water compartments which are in close relation to this signal, namely twig and soil water. The sampling was carried out in approximately two-week intervals during five consecutive vegetation seasons...
March 19, 2018: Journal of Plant Physiology
Hisashi Kato-Noguchi, Keisuke Nakamura, Nobuyuki Okuda
Asparagus (Asparagus officinalis L.) is a widely cultivated perennial veritable and can be harvested more than ten years. However, the crop quality and yield decline after a few year's cultivation, which is called "asparagus decline". Even though those asparagus plants were replaced with new young asparagus plants, the productivity and quality of the crop remain relatively low, which is known as a "asparagus replant problem". One of the possible reasons for "asparagus decline" and "asparagus replant problem" is thought to be autotoxicity of asparagus...
March 19, 2018: Journal of Plant Physiology
Chrysanthi Valassakis, Pantelis Livanos, Martha Minopetrou, Kosmas Haralampidis, Andreas Roussis
Selenium Βinding Protein (SBP, originally termed SBP56) was identified in mouse liver as a cytosolic protein that could bind radioactive selenium. SBPs are highly conserved proteins present in a wide array of species across all kingdoms and are likely to be involved in selenium metabolism. In Arabidopsis, the selenium binding protein (SBP) gene family comprises three genes (AtSBP1, AtSBP2 and AtSBP3). AtSBP1 and AtSBP2 are clustered in a head-to-tail arrangement on chromosome IV, while AtSBP3 is located on chromosome III...
March 19, 2018: Journal of Plant Physiology
Xinping Yang, Martijn J Jansen, Qian Zhang, Lidiya Sergeeva, Wilco Ligterink, Celestina Mariani, Ivo Rieu, Eric J W Visser
Flooding negatively affects the growth and even survival of most terrestrial plants. Upon flooding, the excess water quickly decreases the gas exchange between atmosphere and the submerged plant tissues, which leads to oxygen deficiency resulting in a plant cell energy crisis, and eventually plant death. Solanum dulcamara survives flooding by producing aerenchymatous adventitious roots (ARs) from pre-formed primordia on the stem, which replace the original flood-sensitive root system. However, we found that under complete submergence, AR outgrowth was impaired in S...
March 19, 2018: Journal of Plant Physiology
Zhong Zhang, Jian Huang, Xingang Li
The fruit of Chinese jujube (Ziziphus jujuba Mill.) is immensely popular worldwide, while its fleshy fruit has a very short shelf life and suffers serious postharvest damage. The fruit has been controversially classified as non-climacteric, though the mechanisms underlying its ripening behavior, particularly the role of ethylene, have remained unclear. In this study, low and stable ethylene production was detected during ripening of Z. jujuba 'Dongzao' fruit, with production increasing at the full maturity stage...
March 16, 2018: Journal of Plant Physiology
Jing Niu, Siping Zhang, Shaodong Liu, Huijuan Ma, Jing Chen, Qian Shen, Changwei Ge, Xiaomeng Zhang, Chaoyou Pang, Xinhua Zhao
The objective of this study was to investigate the root growth compensatory effects and cotton yield under drought stress. The results indicate that the root dry weight, boll weight, and cotton yield increased in both the drought-resistant cultivar (CCRI-45) and the drought-sensitive cultivar (CCRI-60). Compensation effects were exhibited under the three-day drought stress treatment at a soil relative water content (SRWC) of 60% and 45% during the seedling stage, and flowering and boll-forming stage over two years...
March 9, 2018: Journal of Plant Physiology
Ewa M Kalemba, Ewelina Ratajczak
Approximately 20% of plant species, including silver maple (Acer saccharinum L.), produce seeds that are sensitive to desiccation, which is reflected in their poor storage potential and viability. In the search for a compound that can improve seed recalcitrance, freshly harvested seeds were soaked in either 2.5 mM reduced glutathione (GSH) or water and desiccated to comparable water levels of 55-20%. We examined the impact of a doubled endogenous level of glutathione on the seed germination capacity, the activity of enzymes involved in glutathione metabolism, the cell membrane components and integrity, reactive oxygen species, and ascorbate levels...
March 8, 2018: Journal of Plant Physiology
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