TY - JOUR
T1 - Mapping covariation quantitative trait loci that control organ growth and whole-plant biomass
AU - Gan, Jingwen
AU - Cao, Yige
AU - Jiang, Libo
AU - Wu, Rongling
N1 - Funding Information:
This work is supported by Fundamental Research Funds for the Central Universities (NO. BLX201715), grant 31700576 from National Natural Science Foundation of China, grant 201404102 from the State Administration of Forestry of China.
Publisher Copyright:
© 2019 Gan, Cao, Jiang and Wu.
PY - 2019/5/31
Y1 - 2019/5/31
N2 - Covariation between organ growth and biomass accumulation plays an important role in plants. Plant to capture optimal fitness in nature, which depend coordinate and interact for distinct organs such as leaves, stems, and roots. Although many studies have focused on plant growth or biomass allocation, detailed information on the genetic mechanism of coordinated variation is lacking. Here, we expand a new mapping model based on functional mapping to detect covariation quantitative trait loci (QTLs) that govern development of plant organs and whole biomass, which, via a series of hypothesis tests, allows quantification of how QTLs regulate covariation between organ growth and biomass accumulation. The model was implemented to analyze leaf number data and the whole dry weight of recombinant inbred lines (RILs) of Arabidopsis. Two key QTLs related to growth and biomass allocation that reside within biologically meaningful genes, CRA1 and HIPP25, are characterized. These two genes may control covariation between two traits. The new model will enable the elucidation of the genetic architecture underlying growth and biomass accumulation, which may enhance our understanding of fitness development in plants.
AB - Covariation between organ growth and biomass accumulation plays an important role in plants. Plant to capture optimal fitness in nature, which depend coordinate and interact for distinct organs such as leaves, stems, and roots. Although many studies have focused on plant growth or biomass allocation, detailed information on the genetic mechanism of coordinated variation is lacking. Here, we expand a new mapping model based on functional mapping to detect covariation quantitative trait loci (QTLs) that govern development of plant organs and whole biomass, which, via a series of hypothesis tests, allows quantification of how QTLs regulate covariation between organ growth and biomass accumulation. The model was implemented to analyze leaf number data and the whole dry weight of recombinant inbred lines (RILs) of Arabidopsis. Two key QTLs related to growth and biomass allocation that reside within biologically meaningful genes, CRA1 and HIPP25, are characterized. These two genes may control covariation between two traits. The new model will enable the elucidation of the genetic architecture underlying growth and biomass accumulation, which may enhance our understanding of fitness development in plants.
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U2 - 10.3389/fpls.2019.00719
DO - 10.3389/fpls.2019.00719
M3 - Article
C2 - 31214231
AN - SCOPUS:85068480751
SN - 1664-462X
VL - 10
JO - Frontiers in Plant Science
JF - Frontiers in Plant Science
M1 - 719
ER -