Abstract
Root architectural modifications in response to altered nutrient level can be used as selection marker for better adapted rice varieties. In this study, we screened six local rice varieties commonly grown in Pakistan, using their unique root architecture and several molecular markers to identify best adapted local variety under phosphorus limiting conditions. Our data showed that rice variety with significant changes in its three-dimensional root architecture system (RSA) and enhanced expression of phosphorus transporters (OsPT2, OsPT4 and OsPT6) is the best variety to handle stress as compared to other varieties. Along with development of screening strategy/method, our data provided evidence that phosphorus starvation leads to upregulation of stress hormone ethylene, which regulates root elongation and root hair development therefore facilitating root architecture modification. We then further checked, how to mitigate or enhance phosphorus starvation responses by application of hormones exogenously, our results showed that ethylene application/treatment enhances phosphorus starvation responses, whereas cytokinin on the other hand reverses deficiency effects which implicates hormonal cross talk is key to modulate P-deficiency responses in rice. This study provides an easy and quick method of analysis of root architecture as physiological marker for rice screening and improve crop yield by selecting best adapted variety for P deficient soils. In future, detail study for understanding phytohormone mediated transcriptomic changes in response to nutrient deficiency and in correlation with physiological response will help to select better adapted varieties that will eventually result in increase of rice yield.
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Claims 6
Claim · model-written summary
The best adapted rice variety had marked root architecture changes and enhanced phosphorus transporter expression compared with other varieties.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- root architecture systeme0
- Gene
- OsPT2, OsPT4 and OsPT6e0
- Outcome
- best variety to handle stresse0
- Direction
- beste0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice variety with significant changes in its three-dimensional root architecture system (RSA) and enhanced expression of phosphorus transporters (OsPT2, OsPT4 and OsPT6) is the best variety to handle stress as compared to other varieties”
Claim · model-written summary
Phosphorus starvation upregulated ethylene.
- Taxon
- RiceOryza sativat0
- Treatment
- phosphorus starvatione0
- Outcome
- stress hormone ethylenee0
- Direction
- upregulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphorus starvation leads to upregulation of stress hormone ethylene”
t0“Rice”
Claim · model-written summary
Ethylene regulated root elongation and root hair development during phosphorus starvation.
- Taxon
- RiceOryza sativat0
- Compound
- ethylenee0
- Outcome
- root elongation and root hair developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethylene, which regulates root elongation and root hair development therefore facilitating root architecture modification”
t0“Rice”
Claim · model-written summary
Exogenous ethylene enhanced phosphorus starvation responses.
- Taxon
- RiceOryza sativat0
- Treatment
- ethylene application/treatmente0
- Outcome
- phosphorus starvation responsese0
- Direction
- enhancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethylene application/treatment enhances phosphorus starvation responses”
e1“in rice”
t0“Rice”
Claim · model-written summary
Exogenous cytokinin reversed phosphorus deficiency effects.
- Taxon
- RiceOryza sativat0
- Treatment
- cytokinine0
- Outcome
- deficiency effectse0
- Direction
- reversese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cytokinin on the other hand reverses deficiency effects”
e1“in rice”
t0“Rice”
Claim · model-written summary
Root architecture analysis was presented as a quick physiological marker for rice variety screening.
- Taxon
- riceOryza sativae0
- Outcome
- method of analysis of root architecture as physiological marker for rice screeninge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an easy and quick method of analysis of root architecture as physiological marker for rice screening”
The same questions in other papers
phosphorus · physiology: hormones · Oryza sativa (rice)Positive and negative results
2 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
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.