Effect of phosphorus deficiency on photosynthetic inorganic carbon assimilation of three climber plant species

Botanical Studies
Deke Xing, Yanyou Wu

Abstract

P deficiency in karst areas significantly influenced leaf photosynthesis and carbon metabolisms in plants which were bad for plant growth. Meanwhile, fertilizer application would cause lots of environmental problems. Therefore planning and developing P deficiency-resistant plants in karst areas are important to prevent shortage of P resources and reduce the environmental impacts of P supplementation. This study examined the photosynthetic response of three climber plant species, namely, Pharbitis nil (Linn.) Choisy, Lonicera pampaninii Levl, and Parthenocissus tricuspidata (Sieb.et Zucc.) Planch to phosphorus (P) deficiency stress. The plants were exposed to P deficiency stress at three treatments of 0.125 mM, 0.031 mM, and 0 mM for 30 d; 0.250 mM P was used as the control. Photosynthetic responses were determined by measurement of leaf photosynthesis, chlorophyll fluorescence, carbonic anhydrase activity, and stable carbon isotope ratios. Pharbitis nil showed high CA activity, more negative δ(13)C values and could maintain long-term stable photosynthetic capacity. Lonicera pampaninii also showed high CA activity but positive δ(13)C values compared to Pharbitis nil, and its photosynthetic capacity decreased as P deficiency stre...Continue Reading

References

Jul 4, 2001·Journal of Experimental Botany·A J PietersD W Lawlor
Nov 27, 2002·Annals of Botany·Henning Høgh-JensenJean-Francois Soussana
Oct 14, 2009·World Journal of Gastroenterology : WJG·Sae-Kwang KuSeong-Soo Roh
Dec 15, 2010·Annals of Botany·Stephen L ByrneSusanne Barth

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BETA
environmental stresses

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SPSS

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