title: Hydrogen sulfide stimulates β-amylase activity during early stages of wheat grain germination.
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.
authors: School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, Anhui, China. zhandzhy@yahoo.com.cn
authors: Hua
authors: H
authors: Zhang
authors: Wei
authors: W
authors: Dou
authors: Cheng-Xi
authors: CX
authors: Jiang
authors: Zhao-Jun
authors: ZJ
authors: Wei
authors: Jian
authors: J
authors: Liu
authors: Russell L
authors: RL
authors: Jones
mesh_terms: D056625:Endosperm / Q000187:drug effects / Q000201:enzymology* / Q000254:growth & development; D018525:Germination; D006862:Hydrogen Sulfide / Q000494:pharmacology*; D010940:Plant Proteins / Q000378:metabolism; D014908:Triticum / Q000187:drug effects / Q000201:enzymology / Q000254:growth & development*; D001614:beta-Amylase / Q000378:metabolism*
chemical_list: D010940:Plant Proteins; D001614:beta-Amylase; D006862:Hydrogen Sulfide