Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

2 Acta Physiologiae Plantarum

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Signaling molecule methylglyoxal-induced thermotolerance is partly mediated by hydrogen sulfide in maize (Zea mays L.) seedlings

100%

Li Z.-G. , Long W. B. , Yang S.-Z. , Wang Y.-C. , Tang J.-H.

Acta Physiologiae Plantarum

2018

tom 40

nr 04

Endogenous hydrogen sulfide regulated by calcium is involved in thermotolerance in tobacco Nicotiana tabacum L. suspension cell cultures

72%

Li Z.-G. , Long W.-B. , Yang S.-Z. , Wang Y.-C. , Tang J.-H. , Wen L. , Wen L. , Zhu B.-Y. , Min X.

Acta Physiologiae Plantarum

2015

tom 37

nr 10

Calcium (Ca2+)/calmodulin (CaM), a core component of calcium messenger system, is a multiple second messenger that is involved in multiple stress tolerance including heat tolerance in plants, hydrogen sulfide (H2S) is fast emerging similar functions, but Ca2+ and H2S crosstalk in the acquisition of thermotolerance is not completely understood. In this article, Ca2+ and CaM activated the activity of cysteine desulfhydrase (L-DES), followed by inducing endogenous H2S accumulation in tobacco suspension cultured cells, while treatment with Ca2+ chelator ethylene glycol-bis(b-aminoethylether)- N,N,N0,N0-tetraacetic acid and CaM antagonists chlorpromazine lowered L-DES activity and H2S accumulation. Interestingly, Ca2+- and CaM-activated L-DES activity and endogenous H2S accumulation were eliminated by H2S synthesis inhibitors DL-propargylglycine (PAG), aminooxy acetic acid (AOA), potassium pyruvate (PP) and hydroxylamine (HA), and the H2S scavenger hypotaurine (HT), indicating that Ca2+ and CaM regulated endogenous H2S generation via activating L-DES activity in tobacco cells. Furthermore, H2S donor NaHS, Ca2+ and CaM treatment alone significantly improved the thermotolerance of tobacco cells, and heat tolerance induced by Ca2+ and CaM was enhanced by exogenous NaHS, while weakened by PAG, AOA, PP, HA or HT. All above-mentioned results suggest that endogenous H2S generated by L-DES was involved, at least partly, in the thermotolerance induced by Ca2+ and CaM in tobacco suspension cell cultures.