Characterization of hemicellulose during xylogenesis in rare tree species Castanopsis hystrix

HaoqiangYang; Biao Zheng; Zhouyang Xiang; Mirza Faisal Qaseem; Shuai Zhao; Huiling Li; Jia-Xun Feng; Weihua Zhang; Mariusz J Stolarski; Ai-MinWu

doi:10.1016/j.ijbiomac.2022.05.141

Characterization of hemicellulose during xylogenesis in rare tree species Castanopsis hystrix

Int J Biol Macromol. 2022 Jul 1:212:348-357. doi: 10.1016/j.ijbiomac.2022.05.141. Epub 2022 May 24.

Authors

Affiliations

¹ State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou 510642, China; Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architectures, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou, 510642, China.
² State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
³ State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzyme Engineering Technology, College of Life Science and Technology, Guangxi University, Nanning, 530004, China.
⁴ State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzyme Engineering Technology, College of Life Science and Technology, Guangxi University, Nanning, 530004, China. Electronic address: jxfeng001@163.com.
⁵ Guangdong Academy of Forestry, Guangzhou, China. Electronic address: zwh523@sinogaf.cn.
⁶ Department of Genetics, Plant Breeding and Bioresource Engineering, Faculty of Agriculture and Forestry, Centre for Bioeconomy and Renewable Energies, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10-719, Olsztyn, Poland.
⁷ State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangzhou 510642, China; Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architectures, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou, 510642, China. Electronic address: wuaimin@scau.edu.cn.

PMID: 35623456
DOI: 10.1016/j.ijbiomac.2022.05.141

Abstract

Hemicellulose is an important component of the plant cell wall which vary in structure and composition between plant species. The research of hemicellulose structures is primarily focused on fast-growing plants during xylogenesis, with slow-growing and rare trees receiving the least attention. Here, hemicellulose structure of the rare species Castanopsis hystrix during xylogenesis was analyzed. Acetyl methyl glucuronide xylan was the most common type of hemicellulose in C. hystrix, with a unique tetrasaccharide structure at the reducing end. Hemicellulose type, structure, molecular weight, thermal stability, biosynthesis and acetyl substitution content and pattern remained stable during the xylogenesis in C. hystrix, which could be attributed to its slow growth. The stable polymer type, low side chain modification and high acetyl substitution of hemicellulose throughout the stems are among the reasons for the hardness and corrosion resistance properties of C. hystrix wood. Genetic modification can be used to improve these properties.

Keywords: Castanopsis hystrix; Hemicellulose; Structure; Synthesis; Xlylan; Xylogenesis.

MeSH terms

Fagaceae*
Polysaccharides / chemistry
Trees*
Wood

Substances

Polysaccharides
hemicellulose