Abstract
The whole-leaf photosynthetic rate in rice plants is controlled by various physiological processes. In a high-yielding indica rice variety, Habataki, the leaf photosynthetic rate (LPR) of the uppermost fully expanded leaves was approximately 130 to 140% of that in a japonica variety, Sasanishiki, from booting to the early ripening stage. We characterized the difference in the LPR between Habataki and Sasanishiki. Leaves of Habataki contained higher levels of nitrogen and, as a consequence, of Rubisco, and had higher stomatal conductance that was associated with higher hydraulic conductance from roots to leaves than those of Sasanishiki. These features were responsible for the higher LPR of Habataki. An analysis of chromosome segment substitution lines (CSSLs) in which chromosome segments from Habataki were substituted into the genetic background of Sasanishiki showed that three genetic regions on chromosomes 4, 5 and 11 were responsible for the increase in the LPR. Each of these regions was estimated to increase the LPR by 15 to 30%, and we showed that they were associated with higher activity of mesophyll photosynthesis due to higher leaf nitrogen content and greater stomatal conductance. Leaf nitrogen content and stomatal conductance may be useful parameters for further quantitative trait locus analysis of efficient photosynthesis in leaves.
| Original language | English |
|---|---|
| Pages (from-to) | 118-127 |
| Number of pages | 10 |
| Journal | Plant Production Science |
| Volume | 14 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 29 2011 |
| Externally published | Yes |
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Keywords
- Chromosome segment substitution line
- Hydraulic conductance
- Nitrogen content
- Oryza sativa
- Photosynthesis
- Quantitative trait locus
- Stomatal conductance
ASJC Scopus subject areas
- Agronomy and Crop Science
Cite this
Identification of Chromosomal Regions Controlling the Leaf Photosynthetic Rate in Rice by Using a Progeny from Japonica and High-Yielding Indica Varieties. / Adachi, Shunsuke; Nito, Naoko; Kondo, Motohiko; Yamamoto, Toshio; Arai-Sanoh, Yumiko S.; Ando, Tsuyu; Ookawa, Taiichiro; Yano, Masahiro; Hirasawa, Tadashi.
In: Plant Production Science, Vol. 14, No. 2, 29.04.2011, p. 118-127.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Identification of Chromosomal Regions Controlling the Leaf Photosynthetic Rate in Rice by Using a Progeny from Japonica and High-Yielding Indica Varieties
AU - Adachi, Shunsuke
AU - Nito, Naoko
AU - Kondo, Motohiko
AU - Yamamoto, Toshio
AU - Arai-Sanoh, Yumiko S.
AU - Ando, Tsuyu
AU - Ookawa, Taiichiro
AU - Yano, Masahiro
AU - Hirasawa, Tadashi
PY - 2011/4/29
Y1 - 2011/4/29
N2 - The whole-leaf photosynthetic rate in rice plants is controlled by various physiological processes. In a high-yielding indica rice variety, Habataki, the leaf photosynthetic rate (LPR) of the uppermost fully expanded leaves was approximately 130 to 140% of that in a japonica variety, Sasanishiki, from booting to the early ripening stage. We characterized the difference in the LPR between Habataki and Sasanishiki. Leaves of Habataki contained higher levels of nitrogen and, as a consequence, of Rubisco, and had higher stomatal conductance that was associated with higher hydraulic conductance from roots to leaves than those of Sasanishiki. These features were responsible for the higher LPR of Habataki. An analysis of chromosome segment substitution lines (CSSLs) in which chromosome segments from Habataki were substituted into the genetic background of Sasanishiki showed that three genetic regions on chromosomes 4, 5 and 11 were responsible for the increase in the LPR. Each of these regions was estimated to increase the LPR by 15 to 30%, and we showed that they were associated with higher activity of mesophyll photosynthesis due to higher leaf nitrogen content and greater stomatal conductance. Leaf nitrogen content and stomatal conductance may be useful parameters for further quantitative trait locus analysis of efficient photosynthesis in leaves.
AB - The whole-leaf photosynthetic rate in rice plants is controlled by various physiological processes. In a high-yielding indica rice variety, Habataki, the leaf photosynthetic rate (LPR) of the uppermost fully expanded leaves was approximately 130 to 140% of that in a japonica variety, Sasanishiki, from booting to the early ripening stage. We characterized the difference in the LPR between Habataki and Sasanishiki. Leaves of Habataki contained higher levels of nitrogen and, as a consequence, of Rubisco, and had higher stomatal conductance that was associated with higher hydraulic conductance from roots to leaves than those of Sasanishiki. These features were responsible for the higher LPR of Habataki. An analysis of chromosome segment substitution lines (CSSLs) in which chromosome segments from Habataki were substituted into the genetic background of Sasanishiki showed that three genetic regions on chromosomes 4, 5 and 11 were responsible for the increase in the LPR. Each of these regions was estimated to increase the LPR by 15 to 30%, and we showed that they were associated with higher activity of mesophyll photosynthesis due to higher leaf nitrogen content and greater stomatal conductance. Leaf nitrogen content and stomatal conductance may be useful parameters for further quantitative trait locus analysis of efficient photosynthesis in leaves.
KW - Chromosome segment substitution line
KW - Hydraulic conductance
KW - Nitrogen content
KW - Oryza sativa
KW - Photosynthesis
KW - Quantitative trait locus
KW - Stomatal conductance
UR - http://www.scopus.com/inward/record.url?scp=79955157796&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79955157796&partnerID=8YFLogxK
U2 - 10.1626/pps.14.118
DO - 10.1626/pps.14.118
M3 - Article
VL - 14
SP - 118
EP - 127
JO - Plant Production Science
JF - Plant Production Science
SN - 1343-943X
IS - 2
ER -