Study on photosynthetic responses and chlorophyll fluorescence in Rhizophora mucronata seedlings under shade regimes

Ulqodry, Tengku Zia and Matsumoto, Fumiko and Okimoto, Yosuke and Nose, Akihiro and Zheng, Shao-Hui (2014) Study on photosynthetic responses and chlorophyll fluorescence in Rhizophora mucronata seedlings under shade regimes. Acta Physiol Plant (36). pp. 1903-1917.

Text T. Zia Ulqodry-Artikel-Study on photosynthetic responses and chlorophyll fluorescence in Rhizophora mucronata seedlings under shade regimes.pdf - Published Version Download (2MB)

Abstract

The photosynthetic performance of mangrove Rhizophora mucronata seedlings grown under seasonally full light (HL), 50 % shade (ML), and 80 % shade (LL) conditions was characterized by gas exchange, and chlorophyll fluorescence. The carboxylation efficiency significantly affected the seasonal change of the photosynthetic capacity. Temperature and light might have synergic effect on the carboxylation efficiency. The photosynthetic rate (PN) of R. mucronata seedlings under shade regimes, however, could not be attributed to variability in chlorophyll, Ci, UPSII, ETR or qP values but more to differences in carboxylation efficiency, gmax, and Emax. HL and ML plants had higher PN, gs and E than the LL ones. Nevertheless, LL leaves exhibited low photoinhibition susceptibility. The high non-photochemical quenching in HL leaves may show that applied light intensity probably exceeded the photosynthetic capability. The findings indicate that ML treatments provided the best condition to obtain such carbon fixation capacity.

Item Type:	Article
Subjects:	Q Science > Q Science (General) > Q1-295 General
Divisions:	08-Faculty of Mathematics and Natural Science > 54241-Marine Science (S1)
Depositing User:	Dr. Tengku Zia Ulqodry
Date Deposited:	12 Jun 2023 16:04
Last Modified:	12 Jun 2023 16:04
URI:	http://repository.unsri.ac.id/id/eprint/109054

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