Study on Fructan Metabolism and Enzyme Activity of Helianthus tuberosus L.

Abstract:

“Qingyu 2” Helianthus tuberosus L. was used to study fructan metabolism and the synthesis and degradation enzyme activity in the whole growth period of Helianthus tuberosus on dry land and irrigated land. The results show that, SST is mainly expressed in the leaves, the main site to synthesis kestose. FFT has high level expression mainly in the tuber expansion stage and then synthesis the DP ≥ 4 fructan. The stem with small fructan biosynthesis and degradation is a temporary fructan storage site. Before and after blossom, FEH activity reaches the peak in leaves and tubers. Fructan synthesizes and accumulates mainly in the rapid growth period and tuber formation stage, and remains stable in blossom stage before transfering rapidly to tubers from leaves and stems inexpansion period. Drought stress on dry land does not affect the fructan metabolism before blossom, but prevents the FEH expression in blossom, which delays fructan transfer to the tubers and FFT expression of tubers.

• Periodical: Advanced Materials Research (Volumes 1010-1012)
• Pages: 229-234
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1010-1012.229
• Online since: August 2014
• Authors: Xue Mei Sun, Li Hui Wang, Yi Li, Meng Liang Zhao, Qi Wen Zhong, Li Li*
• Keywords: Fructan, Helianthus tuberosus l, Metabolism Enzyme

References

[1] María E, Nancy Galicia-Lagunas, Rodríguez-Alegría, et al. Food Chemistry, 129(2): 380~386 (2011).

[2] Zheng ZHOU , Hailong CAO, Yu ZHU. et al. Acta Agriculturae Borealioccidental is Sinica, 17( 4) : 297~301, 305 (2008) In Chinese.

[3] Dan-mei LIU, Ji-yu JIANG, Jun YANG, Northern Horticulture, 10 : 140～142 (2009) In Chinese.

[4] Tao KONG, Nan ZHANG, Feng-mei LIN et al. Guangdong Agricultural Sciences, 6: 108~113 (2013) In Chinese.

[5] Zu-xin LIU, Guang-hui XIE. Journal of China Agricultural University, 17(6): 122~123(2012) In Chinese.

[6] Ji X M, Van den Ende W, Schroeven L et al. New Phytologist, 173(1): 50~62(2007).

[7] Amiard V, Annette M B, Billard J P, et al. Plant Physiology, 132(4): 2218~2229(2003).

[8] Dong JIANG, ZhenWen YU, YongGeng LI, et al. Acta Agronomica Sinica, 2002, 28, 179～85 In Chinese.

[9] Kuhbauch W , Thome U. Plant Physiol, 134: 243～250（1989）.

[10] Pheloung P C, Siddique K H M. Ann RevPlant Physiol, 36: 517～568（1985）.

[11] Pollock C J , L loyd E J , Stoddard J L. Physiol Plan t, 59: 257～262(1983).

[12] Mino Y, Maeda K. J Jpn Grass Soc, 20: 6～10( 1974).

[13] SUN Xue-mei, LI Yi, WANG Li-hui, et al. Journal of Anhui Agri. Sci, 39(26): 16001～16003(2011) In Chinese.