Effects of endogenous ascorbic acid on resistance to high-temperature stress in excised rice leaves

Title:

Effects of endogenous ascorbic acid on resistance to high-temperature stress in excised rice leaves

Creator:

Zhang, Q. L., Wei, Y. X., and Peng, C. L.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6e18a1b4-d460-46fb-9451-82c86a8164e5
uuid:6e18a1b4-d460-46fb-9451-82c86a8164e5
issn:0300-3604
doi:10.1007/s11099-018-0836-2

Subject:

kyselina askorbová, rýže, ascorbic acid, rice, high-temperature stress, reactive oxygen species, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Ascorbic acid (Asc) is a major plant antioxidant. L-galactono-1,4-lactone dehydrogenase (GLDH) is an enzyme that catalyzes the last step of Asc biosynthesis in higher plants. Effects of endogenous Asc on resistance to high-temperature stress were studied by using GLDH-overexpressed (GO-2) and GLDH-suppressed transgenic rice (GI-2) as experimental materials. After high-temperature treatment, the maximal quantum yield of PSII was significantly lower in GI-2, and higher in GO-2 compared to wild type rice. The content of reactive oxygen species (ROS) was the highest in GI-2. The higher Asc content resulted in lower lipid peroxidation in GO-2. The contents of chlorophyll, soluble proteins, and Rubisco large and small subunit were positively correlated to the Asc content. These results show that the higher Asc content reduced the accumulation of ROS and maintained the function of rice leaves. We suggest that the higher Asc content could improve the rice resistance to high-temperature stress., Q. L. Zhang, Y. X. Wei, C. L. Peng., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

1453-1458

Source:

Photosynthetica | 2018 Volume:56 | Number:4

Harvested from:

CDK

Metadata only:

false