Panicle removal delays plant senescence and enhances vegetative growth improving biomass production in switchgrass
文献类型： 外文期刊
作者： Zhao, Chunqiao 1 ; Yue, Yuesen 1 ; Wu, Juying 1 ; Scullion, John 2 ; Guo, Qiang 1 ; Wang, Qinghai 1 ; Li, Cui 1 ; Wan, Xiuyun 3 ; Hou, Xincun 1 ; Fan, Xifeng 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Grassland, Flowers & Ecol, 9 Shuguang Huayuan Middle Rd, Beijing 100097, Peoples R China
2.Aberystwyth Univ, IBERS, Penglais Campus, Aberystwyth SY233FL, Wales
3.Huailai Bur Agr & Rural Affairs, Zhangjiakou 075400, Hebei, Peoples R China
关键词： Switchgrass; Panicle removal; 13 C -labeling; Biomass weight; Plant senescence
期刊名称：BIOMASS & BIOENERGY （ 影响因子：6.0； 五年影响因子：5.3 ）
ISSN： 0961-9534
年卷期： 2023 年 174 卷
页码：
收录情况： SCI
摘要： Switchgrass (Panicum virgatum L.) shows great bioenergy potential and provides multiple ecological services. However, its severe seed shedding causes biomass waste and seed diffusion risk. Questions arise as to the pro-duction performance of switchgrass after panicle removal (PR), which remains unknown. We revealed switch -grass growth responses to PR and illustrated physiological reasons. Compared to the untreated switchgrass, PR significantly stimulated stem elongation (32.13%) and increased tiller number (39.70%), as well as aboveground biomass (24.69%). Importantly, PR significantly increased contents of nonstructural carbohydrates (NSCs) in the stem, which was directly beneficial to the ethanol conversion, and in the rhizome and root. The chlorophyll contents, net photosynthetic efficiency, and photochemical quantum efficiencies of flag leaf increased signifi-cantly. PR switchgrass allocated more assimilates into the stem, root, rhizome, and NSCs. Activities of phos-phoenolpyruvate carboxylase, ribulose-1, 5-diphosphate carboxylase, sucrose phosphate synthase (SPS) in flag leaf and adenosine diphosphate glucose pyrophosphorylase (AGPase) and SPS in the stem and rhizome all increased significantly. In contrast, activities of the AGPase in flag leaf and sheath decreased significantly. Contents of zeatin nucleoside, gibberellins, and indoleacetic acid in flag leaf, stem, and rhizome all increased. Abscisic acid contents in flag leaf and stem decreased significantly while increased significantly in the rhizome. In conclusion, growth-promoting hormones delayed plant senescence, enhanced leaf photosynthesis, and enhanced vegetative growth through regulating assimilates-metabolism-related enzymes, which increased biomass accumulation in PR switchgrass. This work provided new insights for yield and digestibility improve-ment in switchgrass through field management practices, hormones regulation, or genetic modification strategies.
- 相关文献
作者其他论文 更多>>
-
The Importance of Soil Seed Bank Function in Studies of Grassland Degradation
作者：Chen, Chao;He, Wei;Scullion, John;Wilkinson, Mike
关键词：plant life cycle; soil permeability; dormancy; Poaceae; soil organic matter
-
In vitro induction and characterization of octaploid Schizachyrium scoparium, an ornamental grass
作者：Xiao, Zhuolin;Wei, Mingjun;Xu, Yue;Nie, Haochen;Zhang, Hui;Teng, Ke;Teng, Wenjun;Wu, Juying;Fan, Xifeng;Yue, Yuesen;Xiao, Zhuolin
关键词：
Schizachyrium scoparium ; Polyploidization; Flow cytometry; Tetraploid; Octaploid -
Pre-Chilling CGA Application Alleviates Chilling Injury in Tomato by Maintaining Photosynthetic Efficiency and Altering Phenylpropanoid Metabolism
作者：Li, Yanmei;Xu, Xiangnan;Mur, Luis A. J.;Guo, Qiang
关键词：chlorogenic acid; light energy transduction; over-winter production; phenylalanine biosynthesis; photosynthetic proteins;
Solanum lycopersicum -
Valorization of dual waste: Heavy metal mitigation and carbon/nutrient regulation in hydrochar via co-hydrothermal carbonization of sewage sludge and sawdust
作者：Zhang, Chen;Wang, Qinghai;Chen, Guo;Zheng, Ruilun;Sun, Guoxin;Zhang, Chen;Wang, Ke;Yang, Yu-Ping;Chen, Jialin
关键词：
-
Insights into the interlinkages between rhizosphere soil extracellular enzymes and microbiome assemblages across soil profiles in grasslands
作者：Liu, Xueqing;Fan, Xifeng;Zhang, Hui;Yue, Yuesen;Wu, Juying;Teng, Wenjun;Mu, Na;Teng, Ke;Wen, Haifeng;Zhang, Mingcai
关键词：Carex leucochlora; Rhizosphere microbe; Soil extracellular enzymes; Soil organic carbon; Soil ecosystem service
-
Miscanthus sinensis 'Gracillimus' Shows Strong Submergence Tolerance Implying Its Potential Utilization in Construction of Ecological Ditches
作者：Zhao, Chunqiao;Wu, Ting;Chang, Aoxiang;Li, Xiaona;Li, Cui;Zheng, Mei;Chen, Zebing;Zhao, Di;Guo, Qiang;Hou, Xincun;Fan, Xifeng;Zhao, Chunqiao;Wu, Ting;Chang, Aoxiang;Fan, Zhenyu;Li, Xiaona;Li, Cui;Zheng, Mei;Sun, Yu;Chen, Zebing;Zhao, Di;Guo, Qiang;Hou, Xincun;Fan, Xifeng;Wu, Ting;Chang, Aoxiang;Fan, Zhenyu;Sun, Yu;Wan, Xiuyun;Meng, Jie;Zhang, Jing
关键词：submergence; perennial grass; ecological ditch; farmland ecosystem; physiological indicators; nitrogen assimilation; biomass dry weight
-
New insights into the cold tolerance of upland switchgrass by integrating a haplotype-resolved genome and multi-omics analysis
作者：Wu, Bingchao;Luo, Dan;Yan, Haidong;Ma, Xixi;Zhu, Jie;Jia, Jiyuan;Sun, Min;Xie, Zheni;Wang, Xiaoshan;Huang, Linkai;Yue, Yuesen;He, Min;Zhao, Bingyu;Xu, Bin;Wang, Jing;Sun, Min
关键词：Upland switchgrass; Haplotype-resolved genomes; Allele-specific expression genes; Cold tolerance
