The effect and implication of human disturbances on altitudinal variation of non-structural carbohydrates in Kobresia pygmaea

• Autorzy: Zhao Z. , Zhang Y. , Chen T. , Cui X. , Wu Q. , An L.
• Języki publikacji: EN

Abstrakty

EN

Non-structural carbohydrates in plant organs can mirror the plant overall carbon supply status and balance and can also provide evidence for their health evaluation in the ecosystem. Non-structural carbohydrates in Kobresia pygmaea, one dominant herbaceous species on the Qinghai-Tibetan Plateau, were measured to investigate altitudinal variation in non-structural carbohydrate accumulations, as well as engineering disturbance on the stability of the alpine grassland ecosystem. An increasing trend with elevation in total soluble sugars, fructose, and sucrose was detected in the K. pygmaea growing in both undisturbed and disturbed sites. However, there were higher amounts and a more distinctly altitudinal trend of non-structural carbohydrates with a minor fluctuation in undisturbed sites compared to disturbed sites. In addition, the altitudinal trend of sucrose is similar to that in sucrose phosphate synthase and sucrose synthase activities, while it is opposite to that in neutral invertase and soluble acid invertase activities, suggesting that the sucrose accumulation was primarily related to its synthesis. These results revealed that human disturbance resulted in a reduced carbon supply and altered the balance of carbohydrate utilization in plants on the Qinghai-Tibetan Plateau.

Słowa kluczowe

EN

human disturbance; altitudinal variation; non-structural carbohydrate; Kobresia pygmaea; sucrose; flora; China

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2014
• Tom: 36
• Numer: 09
• Opis fizyczny: p.2511-2519,fig.,ref.

Twórcy

autor

Zhao Z.

• Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Sciences, 730000 Lanzhou, China

autor

Zhang Y.

• Agriculture College, Henan University of Science and Technology, 471003 Luoyang, China

autor

Chen T.

• Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Sciences, 730000 Lanzhou, China

autor

Cui X.

• School of Life Sciences, Lanzhou University, 730000 Lanzhou, China

autor

Wu Q.

• Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Sciences, 730000 Lanzhou, China

autor

An L.

• School of Life Sciences, Lanzhou University, 730000 Lanzhou, China

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Identyfikatory

DOI

10.1007/s11738-014-1624-7