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Title: OsCESA9 conserved-site mutation leads to largely enhanced plant lodging resistance and biomass enzymatic saccharification by reducing cellulose DP and crystallinity in rice

Abstract

Genetic modification of plant cell walls has been posed to reduce lignocellulose recalcitrance for enhancing biomass saccharification. Several dozen CESA mutants have been reported since cellulose synthase (CESA) gene was first identified, but almost all mutants exhibit the defective phenotypes in plant growth and development. Here, the rice (Oryza sativa) Osfc16 mutant with substitutions (W481C, P482S) at P-CR conserved site in CESA9 shows a slightly affected plant growth and higher biomass yield by 25%–41% compared with wild type (Nipponbare, a japonica variety). Chemical and ultrastructural analyses indicate that Osfc16 has a significantly reduced cellulose crystallinity (CrI) and thinner secondary cell walls compared with wild type. CESA co-IP detection, together with implementations of a proteasome inhibitor (MG132) and two distinct cellulose inhibitors (Calcofluor, CGA), shows that CESA9 mutation could affect integrity of CESA4/7/9 complexes, which may lead to rapid CESA proteasome degradation for low-DP cellulose biosynthesis. These may reduce cellulose CrI, which improves plant lodging resistance, a major and integrated agronomic trait on plant growth and grain production, and enhances biomass enzymatic saccharification by up to 2.3-fold and ethanol productivity by 34%–42%. Our study has for the first time reported a direct modification for the low-DP cellulose production that has broadmore » applications in biomass industries.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]; ORCiD logo [2];  [1]
  1. Huazhong Agricultural Univ. Wuhan (China)
  2. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1376598
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Plant Biotechnology Journal
Additional Journal Information:
Journal Volume: 15; Journal Issue: 9; Journal ID: ISSN 1467-7644
Publisher:
Society for Experimental Biology; Association of Applied Biology
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; biomass saccharification; cellulose; CESA; lodging resistance; rice

Citation Formats

Li, Fengcheng, Xie, Guosheng, Huang, Jiangfeng, Zhang, Ran, Li, Yu, Zhang, Miaomiao, Wang, Yanting, Li, Ao, Li, Xukai, Xia, Tao, Qu, Chengcheng, Hu, Fan, Ragauskas, Arthur J., and Peng, Liangcai. OsCESA9 conserved-site mutation leads to largely enhanced plant lodging resistance and biomass enzymatic saccharification by reducing cellulose DP and crystallinity in rice. United States: N. p., 2017. Web. doi:10.1111/pbi.12700.
Li, Fengcheng, Xie, Guosheng, Huang, Jiangfeng, Zhang, Ran, Li, Yu, Zhang, Miaomiao, Wang, Yanting, Li, Ao, Li, Xukai, Xia, Tao, Qu, Chengcheng, Hu, Fan, Ragauskas, Arthur J., & Peng, Liangcai. OsCESA9 conserved-site mutation leads to largely enhanced plant lodging resistance and biomass enzymatic saccharification by reducing cellulose DP and crystallinity in rice. United States. doi:10.1111/pbi.12700.
Li, Fengcheng, Xie, Guosheng, Huang, Jiangfeng, Zhang, Ran, Li, Yu, Zhang, Miaomiao, Wang, Yanting, Li, Ao, Li, Xukai, Xia, Tao, Qu, Chengcheng, Hu, Fan, Ragauskas, Arthur J., and Peng, Liangcai. Wed . "OsCESA9 conserved-site mutation leads to largely enhanced plant lodging resistance and biomass enzymatic saccharification by reducing cellulose DP and crystallinity in rice". United States. doi:10.1111/pbi.12700. https://www.osti.gov/servlets/purl/1376598.
@article{osti_1376598,
title = {OsCESA9 conserved-site mutation leads to largely enhanced plant lodging resistance and biomass enzymatic saccharification by reducing cellulose DP and crystallinity in rice},
author = {Li, Fengcheng and Xie, Guosheng and Huang, Jiangfeng and Zhang, Ran and Li, Yu and Zhang, Miaomiao and Wang, Yanting and Li, Ao and Li, Xukai and Xia, Tao and Qu, Chengcheng and Hu, Fan and Ragauskas, Arthur J. and Peng, Liangcai},
abstractNote = {Genetic modification of plant cell walls has been posed to reduce lignocellulose recalcitrance for enhancing biomass saccharification. Several dozen CESA mutants have been reported since cellulose synthase (CESA) gene was first identified, but almost all mutants exhibit the defective phenotypes in plant growth and development. Here, the rice (Oryza sativa) Osfc16 mutant with substitutions (W481C, P482S) at P-CR conserved site in CESA9 shows a slightly affected plant growth and higher biomass yield by 25%–41% compared with wild type (Nipponbare, a japonica variety). Chemical and ultrastructural analyses indicate that Osfc16 has a significantly reduced cellulose crystallinity (CrI) and thinner secondary cell walls compared with wild type. CESA co-IP detection, together with implementations of a proteasome inhibitor (MG132) and two distinct cellulose inhibitors (Calcofluor, CGA), shows that CESA9 mutation could affect integrity of CESA4/7/9 complexes, which may lead to rapid CESA proteasome degradation for low-DP cellulose biosynthesis. These may reduce cellulose CrI, which improves plant lodging resistance, a major and integrated agronomic trait on plant growth and grain production, and enhances biomass enzymatic saccharification by up to 2.3-fold and ethanol productivity by 34%–42%. Our study has for the first time reported a direct modification for the low-DP cellulose production that has broad applications in biomass industries.},
doi = {10.1111/pbi.12700},
journal = {Plant Biotechnology Journal},
number = 9,
volume = 15,
place = {United States},
year = {Wed Mar 15 00:00:00 EDT 2017},
month = {Wed Mar 15 00:00:00 EDT 2017}
}

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