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Juan O. Quijia Pillajo, Laura J. Chapin and Michelle L. Jones

( Feng et al., 2014 ; Suzuki et al., 2017 ; Yoshimoto, 2012 ). In plants, autophagy is involved in senescence and abiotic stress responses ( Avila-Ospina et al., 2014 ; Liu et al., 2009 ). Autophagy is involved in the bulk degradation of intracellular

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Jingkang Hu, Yingmei Gao, Tingting Zhao, Jingfu Li, Meini Yao and Xiangyang Xu

on the role of ZF-HD under different abiotic stresses in tomato. Tomato is one of the most popular crops worldwide; it presents good flavor characteristics and high nutritional value. With the publication of the entire genome sequence of tomato, a

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Tao Wang, Ruijie Hao, Huitang Pan, Tangren Cheng and Qixiang Zhang

detect and verify changes in the mRNA expression levels of genes at different developmental stages ( Koo et al., 2010 ; Vaucheret et al., 2004 ) and under various abiotic stress ( Borges et al., 2012 ; Du et al., 2013 ). Normalized quantification of

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Beiquan Mou

crop resistance or tolerance to abiotic stresses (heat, cold, drought, flood, salt, pH, etc.) has not received much attention. However, that is changing as a result of the research and publicity of global warming. “Adaptive research” aiming at adapting

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Seung Hee Eom and Tae Kyung Hyun

gene pairs was calculated according to the formula T = Ks/2λ. The mean value of clock-like rate (λ) for B . rapa was 1.5 × 10 −8 ( Koch et al., 2000 ). Plant growth condition and abiotic stress treatments. Chinese cabbage (cv. Chunkwang) seeds

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Yingmei Gao, Jingkang Hu, Tingting Zhao, Xiangyang Xu, Jingbin Jiang and Jingfu Li

plants suffering from biotic and abiotic stresses ( Century et al., 2008 ). BRI1-EMS-suppressor 1 is a new class of TFs that bind to and activate the promoters of BR genes ( Yin et al., 2005 ). BRs regulate many plant growth and developmental processes

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Mohamed Tawfik, Alejandra Ferenczi, Daniel Enter and Rebecca Grumet

Abiotic stresses (e.g., salinity, drought, cold, oxidative stress) can be major factors limiting plant productivity worldwide. We sought to increase abiotic stress resistance in cucumber by expressing the A. thaliana transcription factors CBF1and CBF3, which regulate genes responsible for enhanced dehydration-stress resistance in Arabidopsis. Our previous studies in the greenhouse and field demonstrated increased salinity tolerance in CBF-expressing cucumber lines. In the current studies, we tested response of CBF-cucumber plants to drought, chilling, and oxidative stresses. Transgenic cucumber plants subjected to drought stress in the greenhouse showed elevated levels of the stress-inducible compatible solute, proline, compared to the nontransgenic controls. Preliminary results also indicate greater photochemical efficiency in CBF-expressing plants under drought stress conditions compared to the nontransgenic controls. Under nonstressed conditions, there were no significant differences in growth between the transgenic and the nontransgenic cucumber plants; however, after a cycle of drought stress, CBF-cucumber lines had less growth reduction compared to the nontransgenic counterparts. The advantage in growth was less pronounced after a second cycle of drought. We also evaluated the transgenic cucumber plants under chilling conditions (i.e., low, nonfreezing temperatures within the 0 to 12 °C range). Based on plant height and cotyledon and leaf damage measurements, transgenic cucumber seedlings did not show chilling tolerance compared to the wild-type control. The response of transgenic CBF-cucumber plants to oxidative stress using methyl viologen is also being evaluated.

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Ruigang Wu, Yi Wang, Ting Wu, Xuefeng Xu and Zhenhai Han

Abiotic stresses, such as cold, drought, and high salinity, are common adverse environmental conditions that can severely limit plant growth and development, as well as crop production ( Xie et al., 2010 ). As sessile organisms, plants have evolved

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Xunzhong Zhang, Wenli Wu, Erik H. Ervin, Chao Shang and Kim Harich

, and apical dominance ( Ryu and Cho, 2015 ). Cytokinins facilitate the responses to delay both stomatal closure and leaf senescence under abiotic stresses ( Ryu and Cho, 2015 ; Zhang et al., 2015 ). Auxins such as IAA can promote root initiation and