Yu Liangliang, Chen Hongpeng, Sun Jiayan, Li Laigeng
National Key Laboratory of Plant Molecular Genetics/CAS Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China.
National Key Laboratory of Plant Molecular Genetics/CAS Key Laboratory of Synthetic Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China Present address: China Eucalyptus Research Center, 30 Middle Renmin Ave, Zhanjiang, Guangdong 524022, China.
Tree Physiol. 2014 Nov;34(11):1289-300. doi: 10.1093/treephys/tpu020. Epub 2014 Apr 11.
KORRIGAN (KOR), encoding an endo-1,4-β-glucanase, plays a critical role in the cellulose synthesis of plant cell wall formation. KOR sequence orthologs are duplicated in the Populus genome relative to Arabidopsis. This study reports an expression analysis of the KOR genes in Populus. The five PtrKOR genes displayed different expression patterns, suggesting that they play roles in different developmental processes. Through RNAi suppression, results demonstrated that PtrKOR1 is required for secondary cell wall cellulose formation in Populus. Together, the results suggest that the PtrKOR genes may play distinct roles in association with cell wall formation in different tissues.
编码内切-1,4-β-葡聚糖酶的KORRIGAN（KOR）在植物细胞壁形成的纤维素合成中起关键作用。相对于拟南芥，杨树基因组中KOR序列直系同源物存在重复。本研究报道了杨树中KOR基因的表达分析。五个PtrKOR基因表现出不同的表达模式，表明它们在不同的发育过程中发挥作用。通过RNA干扰抑制，结果表明PtrKOR1是杨树次生细胞壁纤维素形成所必需的。这些结果共同表明，PtrKOR基因可能在不同组织的细胞壁形成中发挥不同的作用。
