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The genetic architecture of photosynthesis and plant growth‐related traits in tomato
Author(s) -
Oliveira Silva Franklin Magnum,
Lichtenstein Gabriel,
Alseekh Saleh,
RosadoSouza Laise,
Conte Mariana,
Suguiyama Vanessa Fuentes,
Lira Bruno Silvestre,
Fanourakis Dimitrios,
Usadel Björn,
Bhering Leonardo Lopes,
DaMatta Fábio M.,
Sulpice Ronan,
Araújo Wagner L.,
Rossi Magdalena,
Setta Nathalia,
Fernie Alisdair R.,
Carrari Fernando,
NunesNesi Adriano
Publication year - 2018
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.13084
Subject(s) - photosynthesis , genetic architecture , biology , botany , plant growth , gene , genetics , phenotype
To identify genomic regions involved in the regulation of fundamental physiological processes such as photosynthesis and respiration, a population of Solanum pennellii introgression lines was analyzed. We determined phenotypes for physiological, metabolic, and growth related traits, including gas exchange and chlorophyll fluorescence parameters. Data analysis allowed the identification of 208 physiological and metabolic quantitative trait loci with 33 of these being associated to smaller intervals of the genomic regions, termed BINs. Eight BINs were identified that were associated with higher assimilation rates than the recurrent parent M82. Two and 10 genomic regions were related to shoot and root dry matter accumulation, respectively. Nine genomic regions were associated with starch levels, whereas 12 BINs were associated with the levels of other metabolites. Additionally, a comprehensive and detailed annotation of the genomic regions spanning these quantitative trait loci allowed us to identify 87 candidate genes that putatively control the investigated traits. We confirmed 8 of these at the level of variance in gene expression. Taken together, our results allowed the identification of candidate genes that most likely regulate photosynthesis, primary metabolism, and plant growth and as such provide new avenues for crop improvement.