Structural and functional alteration of photosynthetic apparatus in rice under submergence
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2012, Vol 8, Issue 1
Abstract
Submergence induced alteration of photo-system II (PS II) structure and function was probed using fast O-J-I-P chlorophyll a fluorescence transient and CO[sub]2[/sub] photo-assimilation rate. Submergence resulted in an inhibition of CO[sub]2[/sub] photo-assimilation rate and reduction in leaf chlorophyll content in rice but the decrease was more in submergence susceptible (IR 42) and avoiding type (Sabita) cultivars compared to the tolerant (FR 13A) one. Quantification of the chlorophyll a fluorescence transients (JIP-test) revealed large cultivar differences in the response of PS II to submergence. The kinetics of chlorophyll a fluorescence transient showed complex changes in the magnitude and rise of O-J, J-I and I-P phases of fluorescence rise. Due to submergence both donor and acceptor sides of PS II were damaged and electron transport perturbed, which resulted in the fall of CO[sub]2[/sub] photo-assimilation rate. Submergence also affected overall grouping probability (P[sub]G[/sub]) or energetic connectivity between PS II antennae. The fall of P[sub]G[/sub] was greater in submergence susceptible and avoiding types of cultivar compared to the tolerant one. These indicate that chlorophyll fluorescence can be used to know the sensitivity of rice to submergence stress.
Authors and Affiliations
Debabrata Panda, R. Sarkar
Keywords
Related Articles
- EP ID EP150802
- DOI -
- Views 120
- Downloads 0
Evaluation of Qualitative and Quantitative Traits of Maize (cv. 604) Under Drought Stress and Plant Density
In order to study the effects of drought stress and plant density on yield and yields Components of maize (cv. 604), an experiment was conducted as a split plot based on randomized complete block design with four replica...
ВЗАИМОДЕЙСТВИЕ YERSINIA PSEUDOTUBERCULOSIS С<br /> ПРОБИРОЧНЫМИ РАСТЕНИЯМИ КАРТОФЕЛЯ
Инокуляция прикорневой части пробирочных растений картофеля патогенной для человека бактерией Yersinia pseudotuberculosis приводила к колонизации ею стеблевых и листовых тканей. В то же время, внешние симптомы были незна...
Functional State of Rat’s Erythrocytes Under Different Stress Conditions
[b]Background:[/b] In our early publications was shown that electrophorhetic motility of erythrocytes (EPME) is a high effective criteria of adaptation response. This correlation is based on parallel development of adapt...
REGULATION OF ARABIDOPSIS GDH2 NUCLEAR GENE EXPRESSION DEPENDS ON FUNCTIONAL STATE OF MITOCHONDRIA AND CHLOROPLASTS
Overexpression Analysis of emv2 gene coding for Late Embryogenesis<br /> Abundant Protein from Vigna radiata (Wilczek)
Late embryogenesis abundant (LEA) proteins are speculated to protect against water stress deficit in plants. An over expression system for mungbean late embryogenesis abundant protein, emv2 was constructed in a pET29a ve...