Frontiers in Plant Science (Jan 2018)
Auxin-to-Gibberellin Ratio as a Signal for Light Intensity and Quality in Regulating Soybean Growth and Matter Partitioning
- Feng Yang,
- Feng Yang,
- Feng Yang,
- Yuanfang Fan,
- Yuanfang Fan,
- Yuanfang Fan,
- Xiaoling Wu,
- Xiaoling Wu,
- Xiaoling Wu,
- Yajiao Cheng,
- Yajiao Cheng,
- Yajiao Cheng,
- Qinlin Liu,
- Qinlin Liu,
- Qinlin Liu,
- Lingyang Feng,
- Lingyang Feng,
- Lingyang Feng,
- Junxu Chen,
- Junxu Chen,
- Junxu Chen,
- Zhonglin Wang,
- Zhonglin Wang,
- Zhonglin Wang,
- Xiaochun Wang,
- Xiaochun Wang,
- Xiaochun Wang,
- Taiwen Yong,
- Taiwen Yong,
- Taiwen Yong,
- Weiguo Liu,
- Weiguo Liu,
- Weiguo Liu,
- Jiang Liu,
- Jiang Liu,
- Jiang Liu,
- Junbo Du,
- Junbo Du,
- Junbo Du,
- Kai Shu,
- Kai Shu,
- Kai Shu,
- Wenyu Yang,
- Wenyu Yang,
- Wenyu Yang
Affiliations
- Feng Yang
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Feng Yang
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Feng Yang
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Yuanfang Fan
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Yuanfang Fan
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Yuanfang Fan
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Xiaoling Wu
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Xiaoling Wu
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Xiaoling Wu
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Yajiao Cheng
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Yajiao Cheng
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Yajiao Cheng
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Qinlin Liu
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Qinlin Liu
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Qinlin Liu
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Lingyang Feng
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Lingyang Feng
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Lingyang Feng
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Junxu Chen
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Junxu Chen
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Junxu Chen
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Zhonglin Wang
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Zhonglin Wang
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Zhonglin Wang
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Xiaochun Wang
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Xiaochun Wang
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Xiaochun Wang
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Taiwen Yong
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Taiwen Yong
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Taiwen Yong
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Weiguo Liu
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Weiguo Liu
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Weiguo Liu
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Jiang Liu
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Jiang Liu
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Jiang Liu
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Junbo Du
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Junbo Du
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Junbo Du
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Kai Shu
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Kai Shu
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Kai Shu
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- Wenyu Yang
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
- Wenyu Yang
- Sichuan Engineering Research Center for Crop Strip Intercropping System, Chengdu, China
- Wenyu Yang
- Key Laboratory of Crop Ecophysiology and Farming System in Southwest, Ministry of Agriculture, Chengdu, China
- DOI
- https://doi.org/10.3389/fpls.2018.00056
- Journal volume & issue
-
Vol. 9
Abstract
The intensity and quality (red to far-red (R/Fr) ratio) of light directly affect growth of plant under shading. Gibberellins (GAs) and auxin [indole-3-acetic acid (IAA)] play important roles in mediating the shading adaptive responses of plants. Thus, the intensity and quality of the uncoupling light from shading were assessed to identify the influence of each component on the morphology and matter distribution of the leaf, stem, and petiole. This assessment was based on the changes in endogenous Gibberellin 1 (GA1) and IAA levels. Soybean plants were grown in a growth chamber with four treatments [normal (N), N+Fr, low (L), and L+Fr light]. Results revealed that the reductions in photosynthetically active radiation (PAR) and R/Fr ratio equally increased height and stem mass fractions (SMFs) of the soybean seedling. The light intensity significantly influenced the dry mass per unit area and mass fraction of soybean leaves, whereas the light quality regulated the petiole elongation and mass fraction. Low R/Fr ratio (high Fr light) increased the soybean biomass by improving the photosynthetic assimilation rate and quantum yield of photosystem II. In addition, the IAA and GA1 levels in the leaf, stem, and petiole did not reflect the growth response trends of each tissue toward light intensity and quality; however, trends of the IAA-to-GA1 content ratios were similar to those of the growth and matter allocation of each soybean tissue under different light environments. Therefore, the response of growth and matter allocation of soybean to light intensity and quality may be regulated by the IAA-to-GA1 content ratio in the tissues of the soybean plant.
Keywords