Regulation of endogenous proline biosynthesis influences boron toxicity response in arabidopsis thaliana
Yükleniyor...
Dosyalar
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pleiades Publishing
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
Abstract: The relation between endogenous proline and the tolerance to boron toxicity (BT) was investigated in Arabidopsis thaliana. BT resulted in chlorosis, although esk1-1 was the least affected. Under BT, esk1-1, the proline-overproducing mutant, had the highest osmolarity and proline values, whereas p5cs1-4, the proline-deficient mutant, had the lowest values. Catalase, peroxidase, and superoxide dismutase activities were the most stimulated in Col-0 under BT. Ascorbic acid content was the highest in esk1-1 under BT. The highest expression levels of BOR1 and BOR2 was determined at esk1-1. BOR2 expression was the lowest in p5cs1-4. BOR4 expression level were higher than p5cs1-4 under BT. The NIP6;1 gene expression in Col-0 was higher than esk1-1 and p5cs1-4. Boron content was highest in esk1-1 and lowest in p5cs1-4 leaves. Osmotic regulation, GSH biosynthesis, and induction of B transport proteins were the main mechanisms of esk1-1's tolerance to BT. To avoid BT, p5cs1-4 plants prefer to raise the water potential and to keep boron out by balancing boron uptake and excretion.
Açıklama
Anahtar Kelimeler
Arabidopsis thaliana, Boron toxicity, Osmoregulation, Proline, Tolerance, Transport
Kaynak
Russian Journal of Plant Physiology
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
72
Sayı
3
