Reciprocal cross-regulation of VND and SND multigene TF families for wood formation in Populus trichocarpa

Journal Article · Mon Oct 23 00:00:00 EDT 2017 · Proceedings of the National Academy of Sciences of the United States of America

DOI:https://doi.org/10.1073/pnas.1714422114· OSTI ID:1402120

Lin, Ying-Chung Jimmy ^[1]; Chen, Hao ^[2]; Li, Quanzi ^[3]; Li, Wei ^[4]; Wang, Jack P. ^[4]; Shi, Rui ^[5]; Tunlaya-Anukit, Sermsawat ^[2]; Shuai, Peng ^[6]; Wang, Zhifeng ^[7]; Ma, Hongyan ^[7]; Li, Huiyu ^[4]; Sun, Ying-Hsuan ^[8]; Sederoff, Ronald R. ^[2]; Chiang, Vincent L. ^[4]

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1. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 China,, Department of Life Sciences, College of Life Science, National Taiwan University, Taipei 10617, Taiwan,, Institute of Plant Biology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan,, Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695,
2. Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695,
3. State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China,
4. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 China,, Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695,
5. Crop and Soil Sciences Department, North Carolina State University, Raleigh, NC 27695,
6. Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695,, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China,
7. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 China,
8. Department of Forestry, National Chung Hsing University, Taichung 40227, Taiwan

Significance Wood is a widely used renewable feedstock for industrial production and energy generation. The secondary cell wall (SCW) is the major component of wood. Two key transcription factor families, Vascular-Related NAC-Domain (VND) and Secondary Wall-Associated NAC Domain (SND), are master gene regulators for SCW biosynthesis. However, plants exhibit stunted growth or abnormal SCW development under excess VND or SND gene expression. In this study, we show that two splice variants, PtrVND6-C1 ^IR and PtrSND1-A2 ^IR , each from VND and SND families, act as negative regulators. We propose that PtrVND6-C1 ^IR and PtrSND1-A2 ^IR function together for reciprocal cross-regulation of VND and SND families to maintain homeostasis for xylem differentiation and plant development.

• Sponsoring Organization: USDOE
• Grant/Contract Number: SC000691
• OSTI ID: 1402120
• Journal Information: Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 114 Journal Issue: 45; ISSN 0027-8424
• Publisher: Proceedings of the National Academy of Sciences
• Country of Publication: United States
• Language: English