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- W2375193639 abstract "The distribution characteristics of free amino acids and free proline were investigated in succulent xerophytes—Haloxylon ammodendron and Zygophyllum xanthoxylum, xerophytes—Artemisia sphaerocephala and Caragana korshinskii; and mesophytes Agriophyllum squarrosum and Corispermum mongolicum in Alxa Desert of China. The results showed that the content of total free amino acids were lowest in roots, and highest in leaves. The chief composition of amino acids was different in all of species; the chief composition of amino acids was different in different position, even if in the same species. Xerophytes accumulated large quantities of free proline; the proline concentrations in whole plant were 6^0- to 16^0-fold higher than those of the mesophytes, and were 1^8| to 25^0-fold higher than those of H.ammodendron and Z.xanthoxyluma. In A.sphaerocephala, the concentrations of total free amino acids increased by 2^0- and 5^7-fold, and the concentrations of free proline increased by 3^0- and 10^5-fold from roots to stems, and from stems to leaves, respectively. A similar trend was observed in C.korshinskii. Therefore, accumulating free proline may play a role in drought adaptation in xerophytes. The concentrations of total free amino acids only had a few increased in succulent xerophytes and mesophytes, and it was free proline accumulation that was not the most important factor. Thus succulent xerophytes and mesophytes did not mainly depend on accumulating free proline to adapt to arid environments." @default.
- W2375193639 created "2016-06-24" @default.
- W2375193639 creator A5044021356 @default.
- W2375193639 date "2004-01-01" @default.
- W2375193639 modified "2023-09-28" @default.
- W2375193639 title "Distribution Characteristics of Free Amino Acids and Free Proline in Sseveral Drought-resistant Plants of Alxa Desert, China" @default.
- W2375193639 hasPublicationYear "2004" @default.
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