In nature, crops encounter a combination of abiotic stresses that severely limit yield. Our aim was to dynamically expose the changes of tomatoes' physiological parameters to drought, heat and their combination and thereby clarify the relationship between the responses to single and combined stress. We studied the effect of single and combined drought and heat stresses on the shoot and root of two tomato cultivars (Sufen No.14 as CV1; Jinlingmeiyu as CV2). After being exposed to combined stress for 6 days, the dry weight of shoot and root significantly decreased. The F '/F ' (quantum yield of photosystem II) was significantly lower in CV1 upon drought and combined stress and in CV2 subjected to combined stress (between days 4 and 6) compared to control. The relative water content during combined stress was significantly lower than control from day 4 to recovery day 2. On days 3 and 6, the water loss rate significantly increased under heat stress and decreased at drought and combined stress, respectively. The combined stress caused severe damages on photosystem II and chloroplast ultrastructure. The root activity after stress recovered even though drought significantly increased the activity from day 2 to day 6. Combined stress result in complex responses during tomato growth. The CV1 was more heat tolerant than CV2, but there was no varietal difference at drought and combined stress. This study contributes to the understanding of the underlying physiological response mechanism of plant to combined stress and crop improvement by providing valuable information for abiotic stress-tolerant tomato breeding.
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http://dx.doi.org/10.1111/ppl.12764 | DOI Listing |
PLoS Comput Biol
January 2025
IRSD-Institut de Recherche en Santé Digestive, Université de Toulouse, INSERM, INRAE, ENVT, UPS, Toulouse, France.
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View Article and Find Full Text PDFMedicine (Baltimore)
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Pediatrics Department, Affiliated Hospital of Gansu University of Chinese Medicine, Lanzhou, Gansu, China.
This retrospective study aims to assess the adjunctive efficacy of warm needle moxibustion and gua sha care in the treatment of eszopiclone tablets on sleep quality and psychological stress in insomnia patients. Data of 138 insomnia patients from Gansu Baoshihua hospital between January and December 2022 were collected. Patients were bifurcated into 2 groups: those solely treated with eszopiclone (n = 71) and those administered a combined regimen of eszopiclone, warm needle moxibustion, and gua sha (n = 67).
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January 2025
Department of Pharmacology, Faculty of Veterinary Medicine, Assiut University, Assiut, 71516, Egypt.
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View Article and Find Full Text PDFEnviron Sci Technol
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School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China.
Safer chemical alternatives to bisphenol (BP) have been a major pursuit of modern green chemistry and toxicology. Using a chemical similarity-based approach, it is difficult to identify minor structural differences that contribute to the significant changes of toxicity. Here, we used omics and computational toxicology to identify chemical features associated with BP analogue-induced embryonic toxicity, offering valuable insights to inform the design of safer chemical alternatives.
View Article and Find Full Text PDFVet Med Sci
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Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, İstanbul University-Cerrahpasa, Avcilar, İstanbul, Turkey.
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