Article
Plant Sciences
Guihua Zeng, Feifei Gao, Chan Li, Dandan Li, Zhumei Xi
Summary: Exogenous brassinosteroids (EBR) can alleviate the deleterious effects of drought stress on grape by up-regulating photosynthetic capacity, antioxidant system, autophagic activity, and hormone concentrations.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Hao Zheng, Jie Ma, Wenli Huang, Hongmei Di, Xue Xia, Wei Ma, Jun Ma, Jiao Yang, Xiaomei Li, Huashan Lian, Zhi Huang, Yi Tang, Yangxia Zheng, Huanxiu Li, Fen Zhang, Bo Sun
Summary: This study characterized the changes in physiology and transcriptome of potatoes under drought stress after pretreatment with 24-epibrassinolide (EBR). The results showed that EBR pretreatment increased ABA content, photosynthetic capacity, and antioxidant enzyme activities, while decreasing intercellular CO2 concentration, relative conductivity, and reactive oxygen species. Transcriptome analysis revealed differentially expressed genes involved in plant hormone signal transduction, starch and sucrose metabolism, circadian rhythm, flavonoid biosynthesis, and carotenoid biosynthesis. These findings provide new insights into the mechanisms by which BRs enhance drought resistance in potatoes.
Article
Environmental Studies
Mojtaba Dolatkordestani, Mansour Taghvaei, Andrea Mastinu
Summary: The application of superabsorbents and seed coatings can enhance the growth and physiological responses of Calotropisprocera L. (milkweed) under water deficit conditions. Superabsorbent polymers in growth media improve growth indices and chlorophyll content, while reducing the activity of antioxidant enzymes and proline. Seed coatings improve growth indices, antioxidant enzyme activity, and chlorophyll content. Vermicompost-coated seeds show the most adaptive responses to water stress.
Article
Agronomy
Aihua Wang, Chao Ma, Hongye Ma, Zhilang Qiu, Xiaopeng Wen
Summary: The study compared the physiological and proteomic responses of pitaya under drought stress, revealing enhanced antioxidant enzyme activities and activation of metabolic pathways to cope with stress. The findings provide insights into the mechanisms underlying pitaya's considerable tolerance to drought stress.
Article
Agronomy
Tian Hao, Zhimin Yang, Jianfeng Liang, Jingjin Yu, Jun Liu
Summary: Drought stress is a crucial factor affecting plant growth in turfgrass species. Exogenous plant growth regulators, such as carnosine and chitosan, have been shown to mitigate the adverse effects of drought stress on turf performance. This study found that foliar application of carnosine or chitosan significantly increased turf quality and physiological indexes, such as chlorophyll content and leaf relative water content, while reducing electrolyte leakage and oxidative stress markers in bermudagrass under drought stress. The results suggest that exogenous plant growth regulators could be beneficial for turf management under drought-stressed conditions.
Article
Horticulture
Seyed Morteza Zahedi, Marjan Sadat Hosseini, Narjes Fahadi Hoveizeh, Saeid Kadkhodaei, Marek Vaculik
Summary: This experiment aimed to investigate the significant impact of silicon (Si) in mitigating the adverse effects of drought stress on strawberry plants. The study found that foliar application of Si can improve morphological parameters, osmolytes, chlorophyll and carotenoid levels, as well as antioxidant enzyme activity in strawberry plants under drought stress.
SCIENTIA HORTICULTURAE
(2023)
Review
Plant Sciences
Abdul Wahab, Gholamreza Abdi, Muhammad Hamzah Saleem, Baber Ali, Saqib Ullah, Wadood Shah, Sahar Mumtaz, Ghulam Yasin, Crina Carmen Muresan, Romina Alina Marc
Summary: Water is a crucial component for the existence of life on Earth. However, extreme climate changes have led to water scarcity in many regions, posing significant challenges. This review aims to analyze and understand the physiological and biochemical responses of plants to drought stress and their ability to mitigate its damaging effects. It also explores the role of plant hormones in drought stress responses and signaling. The information for this review was gathered from various sources, including global search engines and scientific literature databases.
Article
Plant Sciences
Shakeel Ahmad, Ihsan Muhammad, Guo Yun Wang, Muhammad Zeeshan, Li Yang, Izhar Ali, Xun Bo Zhou
Summary: The study demonstrated that under drought stress conditions, melatonin application can promote the growth of maize seedlings, alleviate oxidative damage, and enhance plant resistance to stress.
Article
Plant Sciences
Sunette M. Laurie, Michael W. Bairu, Robert N. Laurie
Summary: Sweet potato is a globally important staple that holds potential in addressing hunger and malnutrition. This study investigated the nutritional composition, biochemical reaction to drought stress, and correlation with root yield in sweet potato cultivars. Orange-fleshed cultivars exhibited higher concentrations of Fe, Zn, Mg, Ca, Mn, and dietary fiber, while cream-fleshed cultivars had higher starch and carbohydrate content. Drought stress significantly affected antioxidant enzymes, chlorophyll and proline concentrations, and C-13 discrimination, all of which showed significant correlations with root yield. Nitrate reductase, proline, and chlorophyll concentrations at 60 days after planting are recommended as screening methods for drought tolerance. The cultivars Bophelo and Ndou, which are gaining popularity, have superior nutritional value and can contribute to food security and addressing malnutrition.
Article
Biochemistry & Molecular Biology
Chenlu Liu, Hongtao Wang, Xiuzhi Zhang, Fengwang Ma, Tianli Guo, Cuiying Li
Summary: The study demonstrates that exogenous GABA treatment has a mitigation effect on apple seedlings under drought stress, increasing leaf water content, reducing leaf lipid peroxidation, enhancing photosynthesis, decreasing stomatal conductance, and improving antioxidant capacity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Jingjin Yu, Ningli Fan, Tian Hao, Yingjie Bian, Lili Zhuang, Qiuguo Li, Zhimin Yang
Summary: Drought stress is a major environmental factor that causes physiological and biochemical damages in plants. This study investigated the effectiveness of foliar application of ethionine (ETH) in improving drought tolerance and revealed how it alleviates drought stress. The results showed that foliar application of ETH effectively mitigated drought damages by enhancing root viability, antioxidant enzyme activities, soluble sugar contents, and isopentenyladenosine levels in tall fescue.
PLANT GROWTH REGULATION
(2023)
Article
Plant Sciences
Muhammad Asyraf Mohd Amnan, Wee Fei Aaron Teo, Wan Mohd Aizat, Fiqri Dizar Khaidizar, Boon Chin Tan
Summary: Wood vinegar, a sustainable alternative, has been shown to promote plant growth and enhance stress tolerance. This study evaluated the efficacy of oil palm wood vinegar (OPWV) in mitigating the adverse effects of drought stress on Pandanus amaryllifolius. The results demonstrated that applying OPWV at a specific concentration and frequency increased the plant's tolerance to drought stress.
Article
Agricultural Engineering
Elham Azadvari, Ziba Ghasimi Hagh, Amin Ebrahimi, Hojatollah Bodaghi
Summary: This study aimed to improve the production of secondary metabolites in Catharanthus roseus and investigate the effects of PEG-induced drought stress on physiological and biochemical characteristics. The results showed that increasing PEG concentration led to higher levels of malondialdehyde and proline in the Alba cultivar compared to the Rosea cultivar. The Alba cultivar also exhibited higher activity of antioxidant enzymes. The relative expression of vinblastine biosynthesis genes was significantly increased in both cultivars, especially in the medium with 5% PEG. Similarly, the relative expression of CrMPK3 and catalase genes increased significantly in all PEG-containing media. These findings suggest that PEG can induce the accumulation of vinblastine through a signaling pathway involving MAPK and antioxidant enzymes.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Plant Sciences
Gergana Mihailova, Ivanina Vasileva, Liliana Gigova, Emiliya Gesheva, Lyudmila Simova-Stoilova, Katya Georgieva
Summary: This study assessed the contribution of nonenzymatic and enzymatic antioxidants in the recovery of Haberlea rhodopensis from drought- and freezing-induced desiccation. The results showed that ascorbate and glutathione content remained high during the initial hours of rehydration, indicating their importance in protecting plants from oxidative damage. The activity of antioxidant enzymes increased during the early stages of recovery and certain differences between the two plant groups were observed later during the rehydration process.
Article
Biochemistry & Molecular Biology
Lele Wang, Xuenan Zhang, Yehong She, Chao Hu, Quan Wang, Liquan Wu, Cuicui You, Jian Ke, Haibing He
Summary: Water-saving and drought-resistant rice (WDR) has a simplified adaptation mechanism to protect the photosynthetic apparatus from damage under drought and rehydration conditions. High peroxidase activity and abundant soluble protein content are important physiological bases for maintaining high photosynthetic production potential in WDR.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Wanli You, Jinglin Zhang, Xueyin Ru, Feng Xu, Zhengguo Wu, Peng Jin, Yonghua Zheng, Shifeng Cao
Summary: This study investigated the effect of calcium chloride (CaCl2) treatment on GABA accumulation in fresh-cut cantaloupe and the underlying mechanisms. The results showed that CaCl2 treatment increased GABA content and the activities of GAD and SSADH enzymes, while reducing glutamate content and GABA-T activity. Additionally, CaCl2 treatment upregulated the expressions of CmCML11 and CmCAMTA5, as well as several GABA shunt genes, through the transcriptional activation by CmCAMTA5. Furthermore, the interaction between CmCML11 and CmCAMTA5 enhanced the transcriptional activation of GABA shunt genes. Overall, this study reveals that CaCl2 treatment promotes GABA accumulation in fresh-cut cantaloupe through the combined effect of CmCML11 and CmCAMTA5 in regulating the expressions of GABA shunt genes.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2024)
Article
Plant Sciences
Min Wang, Yupeng Wang, Xiaohui Wang, Guangwei Wei, Huiyi Yang, Xi Yang, Tinghai Shen, Huijie Qu, Sheng Fang, Ziming Wu
Summary: This study identified the high nitrogen use efficiency (NUE) black sesame variety 17-156 and analyzed its underlying physiological and molecular mechanisms. The results showed that 17-156 possesses a sophisticated nitrogen metabolizing machinery to uptake and assimilate higher quantities of inorganic nitrogen, simultaneously improving carbon metabolism and growth. Many important genes were up-regulated in 17-156 under high nitrogen condition. Additionally, 38 potential candidate genes were identified for future studies to improve sesame's NUE. These findings provide valuable resources for understanding the regulatory network of nitrogen metabolism and developing sesame cultivars with improved NUE.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2024)
Article
Plant Sciences
He Dong, Chongmei Xu, Chengtao Zhang, Li Zhang, Yaqin Yao, Suiqi Zhang
Summary: The study found that short cells in maize leaves not only improve leaf mechanical support and photosynthetic performance, enhance drought resistance, but also participate in stomatal regulation.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2024)
Article
Plant Sciences
Na Liu, Wenyan Shang, Mengxin Guan, Jibin Xiao, Guangxiang Tian, Baozhan Ma, Wenjing Shang, Xu Li, Shijia Zhao, Chuang Li, Kun Cheng, Wenming Zheng
Summary: This study cloned the full-length cDNA sequence of TaSPX3 gene in wheat and found that TaSPX3 responds to low phosphorus stress in multiple wheat genotypes. Overexpressing TaSPX3 can alleviate phosphorus deficiency symptoms and promote plant growth in Arabidopsis. The study also revealed the interaction of TaSPX3 with other genes related to the phosphorus starvation signaling pathway.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2024)
Article
Plant Sciences
Kongyuan Wu, Lizhen Wang, Zihan Wu, Ziqing Liu, Zengfei Li, Jun Shen, Shengjie Shi, Hong Liu, Christopher Rensing, Renwei Feng
Summary: Selenium (Se) can reduce uptake and translocation of cadmium (Cd) in plants by regulating root morphology. This study investigated the effects of Se(IV) on root exudates, root morphology, root endogenous hormones, and Cd uptake efficiency in rice under Cd stress. The results showed that Se(IV) significantly reduced Cd concentrations in shoots and roots, and decreased Cd uptake efficiency via root hairs. Se(IV) also affected root morphology, root exudates, and the synthesis of hormones like IAA and JA. However, transcriptome analysis revealed no upregulated differentially expressed genes (DEGs) in IAA synthesis.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2024)
Article
Plant Sciences
Di Wang, Huaifang Zhang, Xuefei Hu, Haizhen Zhang, Shuang Feng, Aimin Zhou
Summary: This study identified a cell number regulator gene called SlCNR8 in willow, which enhances resistance to trace metals in transgenic poplar seedlings. SlCNR8 reduces Cd uptake and accumulation, and can be used as a candidate gene for genetic improvement of phytostabilisation of trace metals.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2024)