High Light Acclimated Developing Primary Leaves of Wheat Seedlings Generate Signal for Stress Adaptation through Super Oxide Dismutase

Autor:	Sandip Kumar Behera, Geetgovind Sinam, Padmanav Joshi, Lalitendu Nayak, Basanti Biswal
Rok vydání:	2018
Předmět:	Horticulture Primary (chemistry) Super oxide dismutase Chemistry Signal Stress adaptation
Zdroj:	INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT. 4:68-73
ISSN:	2455-202X 2454-1117
DOI:	10.18811/ijpen.v4i02.8
Popis:	Wheat seedlings grown in petri dishes were acclimated to high light during their development and subsequently were subjected to osmotic stress by application of polyethylene glycol (PEG). The photochemical efficiency of photosystem II (PS II) of the acclimated seedlings was found to be higher than that of non-acclimated ones under osmotic stress during senescence. The damage of the photosynthetic apparatus seems to be mediated by reactive oxygen species. The higher level of lutein (Lut) and superoxide dismutase (SOD) activity in acclimated seedlings suggest their involvement in the protective mechanism. The senescing leaves, although in a deteriorating phase, exhibit tolerance to osmotic stress due to the adaptation potential acquired earlier during high light (HL) acclimation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9381828f00c311de4e7c4eaf59f00be0 https://doi.org/10.18811/ijpen.v4i02.8 Zobrazit plný text záznamu