Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress

YANG, Xiaoyu; WANG, Xiufeng; WEI, Min

Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress

Xiaoyu YANG, (Shandong Agricultural University, Tai’an 271018, Shandong, People's Republic, China)

Xiufeng WANG, (State Key Laboratory of Crop Biology, Tai'an 271018, Shandong People's Republic, China)

Min WEI (State Key Laboratory of Crop Biology, Tai'an 271018, Shandong People's Republic, China)

Turkish Journal of Botany

2 0

Yıl: 2010 Cilt: 34 Sayı: 4 Sayfa Aralığı: 303 - 310 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress

Öz:

The effects of 2 nitrate levels, 14 (CK) and 140 mmol $L ^{1-}$ (T), on the leaf gas exchange variables of cucumber (Cucumis sativus L. cv. Xintaimici) seedlings grown in hydroponic culture were investigated. Photosynthetic light- and $CO _{2-}$-response curves from CK and T seedlings were determined and used for the analysis of photosynthetic capacity. The results showed that nitrate stress resulted in a significant reduction of net photosynthesis of T seedlings compared with CK. At the same time, the apparent quantum yield, light-saturated net photosynthesis, carboxylation efficiency, and $CO _{2-}$- saturated net photosynthesis in nitrate-stressed cucumbers also decreased significantly with the increase of treatment time. At 12 days, the apparent quantum yield, light-saturated net photosynthesis, carboxylation efficiency, and $CO _{2-}$- saturated net photosynthesis in nitrate-stressed cucumbers were 47%, 60%, 64%, and 54% lower than CK, respectively. The relative effect of stomatal resistance on photosynthesis (S%) in nitrate-stressed cucumber seedlings increased significantly during the first 8 days and returned to the level of CK thereafter. This evidence indicates that not only stomatal but also nonstomatal limitations might be involved in the reduction of net photosynthetic rate in nitrate-stressed seedlings.

Anahtar Kelime: leaves nitrate Turkey seedlings stress photosynthesis light intensity carbon dioxide selection responses cucumbers stress conditions

Konular: Biyoloji

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	YANG X, WANG X, WEI M (2010). Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. , 303 - 310.
Chicago	YANG Xiaoyu,WANG Xiufeng,WEI Min Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. (2010): 303 - 310.
MLA	YANG Xiaoyu,WANG Xiufeng,WEI Min Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. , 2010, ss.303 - 310.
AMA	YANG X,WANG X,WEI M Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. . 2010; 303 - 310.
Vancouver	YANG X,WANG X,WEI M Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. . 2010; 303 - 310.
IEEE	YANG X,WANG X,WEI M "Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress." , ss.303 - 310, 2010.
ISNAD	YANG, Xiaoyu vd. "Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress". (2010), 303-310.

APA	YANG X, WANG X, WEI M (2010). Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. Turkish Journal of Botany, 34(4), 303 - 310.
Chicago	YANG Xiaoyu,WANG Xiufeng,WEI Min Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. Turkish Journal of Botany 34, no.4 (2010): 303 - 310.
MLA	YANG Xiaoyu,WANG Xiufeng,WEI Min Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. Turkish Journal of Botany, vol.34, no.4, 2010, ss.303 - 310.
AMA	YANG X,WANG X,WEI M Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. Turkish Journal of Botany. 2010; 34(4): 303 - 310.
Vancouver	YANG X,WANG X,WEI M Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress. Turkish Journal of Botany. 2010; 34(4): 303 - 310.
IEEE	YANG X,WANG X,WEI M "Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress." Turkish Journal of Botany, 34, ss.303 - 310, 2010.
ISNAD	YANG, Xiaoyu vd. "Response of photosynthesis in the leaves of cucumber seedlings to light intensity and $CO _{2-}$ concentration under nitrate stress". Turkish Journal of Botany 34/4 (2010), 303-310.