Article
Chemistry, Organic
Peng Liu, Meng-Nan Zhou, Lin-Lin Zhu, Xiao-He Chen, Yan-Yan Jiang, Wei Zhang, Bin Liu
Summary: Two new iridoid glycosides and two phenylethanoid glycosides were isolated from Scrophularia ningpoensis roots. The structures were determined through spectroscopic methods, with compound 1 identified as a novel iridoid glycoside with potential anti-inflammatory activity.
Article
Toxicology
Gulin Renda, Mine Kadioglu, Merve Kilic, Busra Korkmaz, Hasan Kirmizibekmez
Summary: The study focused on evaluating the anti-inflammatory activity of Scrophularia kotschyana extracts and isolated compounds. The methanolic extract of the aerial parts showed significant anti-inflammatory properties, leading to further extraction and isolation of bioactive compounds. Among the isolates, luteolin 7-O-beta-glucopyranoside and apigenin 7-O-rutinoside demonstrated significant inhibition of edema formation.
HUMAN & EXPERIMENTAL TOXICOLOGY
(2021)
Article
Agricultural Engineering
Huixia Lei, Haifeng Zhang, Zhenghai Zhang, Hai Sun, Meijia Li, Cai Shao, Hao Liang, Huping Wu, Yayu Zhang
Summary: Drought stress hinders the increase in ginseng root biomass but promotes ginsenoside accumulation. Physiological analysis showed increased levels of MDA, osmoregulatory substances, and ABA, as well as enhanced activities of SOD, POD, and CAT in ginseng roots under drought stress. Transcriptional analysis revealed DEGs enriched in the plant hormone signal transduction pathway, with twelve DEGs from the ABA signaling pathway identified as key mediators of the drought stress response. Additionally, key enzyme genes involved in ginsenoside synthesis were identified, indicating their role in the response to drought stress in ginseng.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Horticulture
Mei Yan, Yandong Yao, Kaiping Mou, Yuanyuan Dan, Weitai Li, Chunlei Wang, Weibiao Liao
Summary: The study showed that hydrogen gas and abscisic acid can increase plant growth and antioxidant enzyme activity, as well as enhance drought resistance in tomato seedlings. Hydrogen gas may improve drought resistance by promoting ABA biosynthesis and the expression of ABA signal transduction genes.
SCIENTIA HORTICULTURAE
(2022)
Article
Plant Sciences
Ilva Licaj, Maria Chiara Di Meo, Anna Fiorillo, Simone Samperna, Mauro Marra, Mariapina Rocco
Summary: The aim of this study was to compare the effect and response of roots from the seedlings of two durum wheat cultivars, Svevo and Saragolla, to Polyethylene glycol-simulated drought stress. Analysis was done on the effect of water stress on root growth and its relation to biochemical and molecular data.
Article
Biochemistry & Molecular Biology
Yiman Li, Wendong Zhang, Dalong Zhang, Yinjian Zheng, Yaliang Xu, Binbin Liu, Qingming Li
Summary: This study used proteomic analysis to investigate the effects of carbon dioxide concentration enrichment on cucumber seedling root under drought stress. The results showed that carbon dioxide enrichment promoted energy and amino acid metabolism, as well as cell wall regulation ability. However, the effectiveness of carbon dioxide enrichment in alleviating drought stress was limited under severe conditions, possibly due to excessive damage to the seedlings.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Jiaqi Zhao, Xuefei Wang, Xingbo Pan, Qianqian Jiang, Zhumei Xi
Summary: The study showed that exogenous putrescine can alleviate the effects of drought stress on Cabernet Sauvignon seedlings by enhancing the antioxidant system, altering ROS scavenging, and increasing net photosynthesis rate. External application of putrescine also promoted the metabolism of endogenous polyamines, providing better drought tolerance for the grape seedlings.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Xiaoting Xie, Yujie Gu, Weili Wang, Farhat Abbas, Sini Qin, Siyi Fu, Jiaqi Mei, Jiayan Wang, Dexuan Ma, Guangchao Wen, Ying Yang, Anket Sharma, Xiaofei Wang, Daoliang Yan, Bingsong Zheng, Yi He, Huwei Yuan
Summary: Winterberry (Ilex verticillata (L.) A. Gray) and its two varieties were studied to investigate their response to drought stress and the alleviating effect of exogenous spermidine (SPD). The results showed that increasing drought stress caused chlorosis and dry edges in winterberry seedlings. Various physiological indices were significantly reduced, while malondialdehyde content increased with drought stress. Moderate drought stress increased the activities of antioxidant enzymes, while severe drought stress decreased them. Soluble sugar and abscisic acid levels increased, while auxin and gibberellic acid levels decreased. External SPD effectively alleviated the effects of drought stress on winterberry seedlings. The native winterberry species showed significantly higher drought resistance compared to its two varieties, providing an important theoretical basis for their popularization and application.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Seung Woon Bang, Seowon Choi, Xuanjun Jin, Se Eun Jung, Joon Weon Choi, Jun Sung Seo, Ju-Kon Kim
Summary: Research has shown that the rice gene OsCCR10 is directly activated by the transcription factor OsNAC5, mediating drought tolerance through lignin accumulation. Overexpression of OsCCR10 in transgenic rice plants results in improved drought tolerance and higher lignin content, while knockout mutants exhibit reduced lignin accumulation and drought tolerance. Transgenic rice plants with root-preferential overexpression of OsCCR10 also show higher grain yield under field drought conditions, indicating the importance of lignin biosynthesis in drought tolerance.
PLANT BIOTECHNOLOGY JOURNAL
(2022)
Article
Plant Sciences
Yuting Ma, Linli Hu, Yue Wu, Zhongqi Tang, Xuemei Xiao, Jian Lyu, Jianming Xie, Jihua Yu
Summary: Green light partially replacing red light and blue light improves drought tolerance in cucumber seedlings by promoting the synthesis of GABA and upregulating the expression of the CsGAD2 gene. This study highlights the role of green light in plant physiological processes and suggests that analyzing the function of green light in improving drought tolerance could lead to new approaches for enhancing plant stress resilience.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Ufuk Celikkol Akcay, Nilgun Okudan
Summary: Serotonin and melatonin, two types of indolamines present in various organisms, have been shown to have strong bioregulatory effects in plant tissues. While the stress-relieving effects of melatonin have been well-documented, the impact of serotonin on plant stress physiology has received limited attention in current literature. In this study, the researchers investigated the effects of exogenous serotonin on tomato seedlings under severe salt and drought stresses. The results showed that serotonin application led to decreased tissue MDA contents and ion leakage levels, as well as increased relative water contents. Additionally, serotonin affected the expression of various stress-related genes, including ACS2, FeSOD, CAT2, GR1, and P5CS.
PLANT GROWTH REGULATION
(2023)
Article
Plant Sciences
Haijun Zhang, Lili Mao, Ming Xin, Huixian Xing, Yanan Zhang, Jing Wu, Dongli Xu, Yiming Wang, Yongqi Shang, Liming Wei, Mingshuo Cui, Tao Zhuang, Xuezhen Sun, Xianliang Song
Summary: This study reports the cloning and characterization of the GhABF3 gene in cotton and reveals its important role in plant drought and salt tolerance.
Article
Forestry
Xun Lei, Huaxue Wu, Man Yin, Xi Zhang, Hanbo Yang, Xiong Huang, Peng Zhu
Summary: In the face of increasingly arid climate, Cunninghamia plays a crucial role in China's southern forest industry, thus it is important to identify and screen drought-tolerant varieties. This study subjected 2-year-old seedlings of C. unica and C. lanceolata from four provenances to water-break tests and observed their physiological responses to different drought conditions. The findings showed that C. unica exhibited greater stability in various physiological parameters and a higher drought tolerance compared to C. lanceolata. These results provide a theoretical basis for understanding drought tolerance in Chinese fir and can aid in selective breeding efforts.
Article
Plant Sciences
Metin Turan, Melek Ekinci, Sanem Argin, Mihail Brinza, Ertan Yildirim
Summary: Drought has negative effects on the physiological and biochemical characteristics of crops. This study aimed to investigate the effects of biostimulants containing PGPR on tomato seedlings under different irrigation levels. The results showed that biostimulant applications mitigated the adverse effects of drought stress and improved plant growth parameters. The most effective dose was 4 L ha(-1) under drought conditions.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Dessislava Todorova, Iskren Sergiev, Zornitsa Katerova, Elena Shopova, Ljudmila Dimitrova, Liliana Brankova
Summary: The study found that Serrate has minimal impact on wheat growth and phenotype but increases certain antioxidants in plant leaves. Additionally, both drought and herbicide + drought treatments significantly inhibit plant growth, elevate oxidative stress markers, and activate the antioxidant defense system in plants.