Effects of aluminum (Al) stress on the isoprenoid metabolism of two Citrus species differing in Al-tolerance.

Autor: Yang LT; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Wang YY; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Bureau of Agriculture and Rural Affairs of Hui'an County, Quanzhou, China., Chen XY; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Fu QX; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Ren YM; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Lin XW; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Ye X; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China., Chen LS; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address: lisongchen2002@hotmail.com.
Jazyk: angličtina
Zdroj: Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2024 Jul 15; Vol. 280, pp. 116545. Date of Electronic Publication: 2024 Jun 07.
DOI: 10.1016/j.ecoenv.2024.116545
Abstrakt: Isoprenoid metabolism and its derivatives took part in photosynthesis, growth regulation, signal transduction, and plant defense to biotic and abiotic stresses. However, how aluminum (Al) stress affects the isoprenoid metabolism and whether isoprenoid metabolism plays a vital role in the Citrus plants in coping with Al stress remain unclear. In this study, we reported that Al-treatment-induced alternation in the volatilization rate of monoterpenes (α-pinene, β-pinene, limonene, α-terpinene, γ-terpinene and 3-carene) and isoprene were different between Citrus sinensis (Al-tolerant) and C. grandis (Al-sensitive) leaves. The Al-induced decrease of CO 2 assimilation, maximum quantum yield of primary PSII photochemistry (F v /F m ), the lower contents of glucose and starch, and the lowered activities of enzymes involved in the mevalonic acid (MVA) pathway and 2-C-methyl-D-erythritol 4-phosphate (MEP) pathway might account for the different volatilization rate of isoprenoids. Furthermore, the altered transcript levels of genes related to isoprenoid precursors and/or derivatives metabolism, such as geranyl diphosphate (GPP) synthase (GPPS) in GPP biosynthesis, geranylgeranyl diphosphate synthase (GGPPS), chlorophyll synthase (CHS) and GGPP reductase (GGPPR) in chlorophyll biosynthesis, limonene synthase (LS) and α-pinene synthase (APS) in limonene and α-pinene synthesis, respectively, might be responsible for the different contents of corresponding products in C. grandis and C. sinensis. Our data suggested that isoprenoid metabolism was involved in Al tolerance response in Citrus, and the alternation of some branches of isoprenoid metabolism could confer different Al-tolerance to Citrus species.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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