Abstract
Low phosphate (Pi) availability decreases photosynthesis, with phosphate limitation of photosynthesis occurring particularly during grain filling of cereal crops; however, effective genetic solutions remain to be established. We previously discovered that rice phosphate transporter OsPHO1;2 controls seed (sink) development through Pi reallocation during grain filling. Here, we find that OsPHO1;2 regulates Pi homeostasis and thus photosynthesis in leaves (source). Loss-of-function of OsPHO1;2 decreased Pi levels in leaves, leading to decreased photosynthetic electron transport activity, CO 2 assimilation rate, and early occurrence of phosphate-limited photosynthesis. Interestingly, ectopic expression of OsPHO1;2 greatly increased Pi availability, and thereby, increased photosynthetic rate in leaves during grain filling, contributing to increased yield. This was supported by the effect of foliar Pi application. Moreover, analysis of core rice germplasm resources revealed that higher OsPHO1;2 expression was associated with enhanced photosynthesis and yield potential compared to those with lower expression. These findings reveal that phosphate-limitation of photosynthesis can be relieved via a genetic approach, and the OsPHO1;2 gene can be employed to reinforce crop breeding strategies for achieving higher photosynthetic efficiency.
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Claims 12
Claim · model-written summary
OsPHO1;2 regulates Pi homeostasis and photosynthesis in rice leaves.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- leavese2
- Gene
- OsPHO1;2e2
- Outcome
- Pi homeostasis and thus photosynthesise2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Here, we find that OsPHO1;2 regulates Pi homeostasis and thus photosynthesis in leaves (source)”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Loss-of-function of OsPHO1;2 decreased Pi levels in rice leaves.
- Taxon
- riceOryza sativat0
- Organ / stage
- leavese3
- Treatment
- Loss-of-function of OsPHO1;2e3
- Gene
- OsPHO1;2e3
- Outcome
- Pi levelse3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Loss-of-function of OsPHO1;2 decreased Pi levels in leaves”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Loss-of-function of OsPHO1;2 decreased photosynthetic electron transport activity and CO2 assimilation rate in rice.
- Taxon
- riceOryza sativat0
- Treatment
- Loss-of-function of OsPHO1;2e4
- Gene
- OsPHO1;2e4
- Outcome
- photosynthetic electron transport activity, CO 2 assimilation ratee4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Loss-of-function of OsPHO1;2 decreased Pi levels in leaves, leading to decreased photosynthetic electron transport activity, CO 2 assimilation rate”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Loss-of-function of OsPHO1;2 led to early occurrence of phosphate-limited photosynthesis in rice.
- Taxon
- riceOryza sativat0
- Treatment
- Loss-of-function of OsPHO1;2e5
- Gene
- OsPHO1;2e5
- Outcome
- early occurrence of phosphate-limited photosynthesise5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Loss-of-function of OsPHO1;2 decreased Pi levels in leaves, leading to decreased photosynthetic electron transport activity, CO 2 assimilation rate, and early occurrence of phosphate-limited photosynthesis”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Ectopic expression of OsPHO1;2 greatly increased Pi availability in rice.
- Taxon
- riceOryza sativat0
- Treatment
- ectopic expression of OsPHO1;2e6
- Gene
- OsPHO1;2e6
- Outcome
- Pi availabilitye6
- Direction
- greatly increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“ectopic expression of OsPHO1;2 greatly increased Pi availability, and thereby, increased photosynthetic rate in leaves during grain filling”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Ectopic expression of OsPHO1;2 increased photosynthetic rate in rice leaves during grain filling.
- Taxon
- riceOryza sativat0
- Organ / stage
- leaves during grain fillinge6
- Treatment
- ectopic expression of OsPHO1;2e6
- Outcome
- photosynthetic ratee6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“ectopic expression of OsPHO1;2 greatly increased Pi availability, and thereby, increased photosynthetic rate in leaves during grain filling”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Ectopic expression of OsPHO1;2 increased yield in rice.
- Taxon
- riceOryza sativat0
- Treatment
- ectopic expression of OsPHO1;2e6
- Outcome
- yielde7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“ectopic expression of OsPHO1;2 greatly increased Pi availability, and thereby, increased photosynthetic rate in leaves during grain filling”
e7“contributing to increased yield”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Foliar Pi application supported the photosynthesis effect of OsPHO1;2 in rice.
- Taxon
- riceOryza sativat0
- Treatment
- foliar Pi applicatione5
- Outcome
- effecte5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“This was supported by the effect of foliar Pi application”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Higher OsPHO1;2 expression in core rice germplasm was associated with enhanced photosynthesis.
- Taxon
- riceOryza sativat0
- Material
- core rice germplasm resourcese6
- Gene
- OsPHO1;2e6
- Outcome
- photosynthesise6
- Direction
- enhancede6
- Comparator
- those with lower expressione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“analysis of core rice germplasm resources revealed that higher OsPHO1;2 expression was associated with enhanced photosynthesis and yield potential compared to those with lower expression”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
Higher OsPHO1;2 expression in core rice germplasm was associated with enhanced yield potential.
- Taxon
- riceOryza sativat0
- Material
- core rice germplasm resourcese6
- Gene
- OsPHO1;2e6
- Outcome
- yield potentiale6
- Direction
- enhancede6
- Comparator
- those with lower expressione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“analysis of core rice germplasm resources revealed that higher OsPHO1;2 expression was associated with enhanced photosynthesis and yield potential compared to those with lower expression”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
The OsPHO1;2 gene can be employed to reinforce rice breeding strategies for higher photosynthetic efficiency.
- Taxon
- riceOryza sativat0
- Gene
- OsPHO1;2e6
- Outcome
- reinforce crop breeding strategiese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“the OsPHO1;2 gene can be employed to reinforce crop breeding strategies for achieving higher photosynthetic efficiency”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
Claim · model-written summary
OsPHO1;2 controls seed (sink) development in rice through Pi reallocation during grain filling.
- Taxon
- riceOryza sativat0
- Gene
- OsPHO1;2e1
- Outcome
- seed (sink) developmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We previously discovered that rice phosphate transporter OsPHO1;2 controls seed (sink) development through Pi reallocation during grain filling”
t0“Genetic improvement of phosphate-limited photosynthesis for high yield in rice”
The same questions in other papers
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- positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.