dc.contributor.author |
Sharma, P.K. |
|
dc.contributor.author |
Sankhalkar, S. |
|
dc.contributor.author |
Fernandes, Y. |
|
dc.date.accessioned |
2015-07-01T05:51:03Z |
|
dc.date.available |
2015-07-01T05:51:03Z |
|
dc.date.issued |
2002 |
|
dc.identifier.citation |
Current Science. 82(2); 2002; 167-171 |
en_US |
dc.identifier.uri |
http://irgu.unigoa.ac.in/drs/handle/unigoa/3334 |
|
dc.description.abstract |
The effect of high light at 30 degrees C on chlorophyll fluorescence, xanthophyll cycle and abscisic acid (ABA) was determined to study the relationship of xanthophyll cycle and ABA in protection against photodamage. Sorghum seedlings of 8 days were grown on Hoagland medium supplemented with ABA (10 sup(-5) M) and photoinhibited at 2200 and 3600 mu mol m sup(-2) s sup(-1) PAR light intensities, and measurement of chlorophyll fluorescence (Fv/Fm ratio, qN, theta-PS II and theta-exc), xanthophyll cycle content and ABA content were made. The results obtained show that seedlings grown on ABA-supplemented medium had better energy dissipation (greater qN) and much greater level of de-epoxidation (high level of Z) than control seedlings. The level of endogenous ABA in seedlings grown on ABA-supplemented medium or otherwise remained the same. The results indicate a possible role of ABA in energy dissipation, probably by stimulating the xanthophyll cycle. |
en_US |
dc.publisher |
Current Science Association, Bangalore |
en_US |
dc.subject |
Botany |
en_US |
dc.title |
Possible function of ABA in protection against photodamage by stimulating xanthophyll cycle in sorghum seedlings |
en_US |
dc.type |
Journal article |
en_US |
dc.identifier.impf |
y |
|