1. Hydrogen sulfide stimulates β-amylase activity during early stages of wheat grain germination.
- Author
-
Zhang H, Dou W, Jiang CX, Wei ZJ, Liu J, and Jones RL
- Subjects
- Endosperm drug effects, Endosperm growth & development, Plant Proteins metabolism, Triticum drug effects, Triticum enzymology, Endosperm enzymology, Germination, Hydrogen Sulfide pharmacology, Triticum growth & development, beta-Amylase metabolism
- Abstract
We recently reported that H 2S could significantly promote the germination of wheat grains subjected to aluminum (Al(3+)) stress.1 In these experiments seeds were pretreated with the H 2S donor NaHS for 12 h prior to Al(3+) stress. During this pre-incubation period we observed that H2S increased the activity of grain amylase in the absence of Al(3+). Using embryoless half grains of wheat we now show that H2S preferentially affects the activity of endosperm β-amylase and that α-amylase synthesis and activity is unaffected by this treatment.
- Published
- 2010
- Full Text
- View/download PDF