Abstract
Osmotic stress causes a series of morphological, physiological, biochemical, and molecular changes that alters plant growth, development, and productivity around the globe. Phytohormones, nutrients, and transcription factors may induce adaptive responses to osmotic stress in plants. We evaluated the effect of osmotic stress induced by 18.5 % polyethylene glycol (PEG) or 100 mM NaCl on growth, content of abscisic acid (ABA), chlorophyll (Chl), sodium, and potassium, and the expression of multifunctional NAC transcription factors in rice cultivars (the salt-tolerant Cotaxtla and salt-sensitive Tres RĂos). The PEG and NaCl decreased shoot height and increased ABA content in both cultivars, and reduced root length in cv. Tres RĂos. The PEG increased Chl content in cv. Cotaxtla leaves. NaCl reduced shoot K+ content in cv. Tres RĂos and increased shoot and root Na+ content in both cultivars, thus resulting in a decreased K+/Na+ ratio. Of the 57 NAC genes evaluated, two of them were repressed (Os10g42130 and Os07g04560) and two other induced (Os02g34970 and OsNAC10) in cv. Cotaxtla in response to PEG, whereas three of them were repressed (Os10g42130, Os07g04560 and Os08g10080), and six induced (Os02g56600, Os02g34970, Os11g08210, Os05g34830, OsNAC6, and OsNAC10) in response to NaCl. In the cv. Tres RĂos, we found two genes repressed (Os10g42130 and Os07g04560), and five induced (Os08g33910, Os03g60080, Os06g51070, OsNAC6, and OsNAC10) in response to PEG, while only two genes were repressed (Os10g42130 and Os07g04560) but 13 induced (Os03g21060, Os08g39110, Os03g60080, Os01g15640, Os06g51070, Os09g33490, Os04g40130, Os12g29330, Os02g36880, Os11g08210, Os05g34830, OsNAC6, and OsNAC10) by NaCl. Osmotic stress affected more severely cv. Tres RĂos than cv. Cotaxtla plants. These different responses might be regulated by ABA and NAC transcription factors.
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Claims 19
Claim · model-written summary
PEG decreased shoot height in both rice cultivars.
- Taxon
- rice
Oryza sativae0 - Treatment
- PEGe1
- Outcome
- shoot heighte1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“The PEG and NaCl decreased shoot height and increased ABA content in both cultivars”
Claim · model-written summary
NaCl decreased shoot height in both rice cultivars.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle1
- Outcome
- shoot heighte1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“The PEG and NaCl decreased shoot height and increased ABA content in both cultivars”
Claim · model-written summary
PEG increased ABA content in both rice cultivars.
- Taxon
- riceOryza sativae0
- Treatment
- PEGe1
- Outcome
- ABA contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“The PEG and NaCl decreased shoot height and increased ABA content in both cultivars”
Claim · model-written summary
NaCl increased ABA content in both rice cultivars.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle1
- Outcome
- ABA contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“The PEG and NaCl decreased shoot height and increased ABA content in both cultivars”
Claim · model-written summary
PEG reduced root length in cultivar Tres Rios.
- Taxon
- riceOryza sativae0
- Treatment
- PEGe1
- Outcome
- root lengthe2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“The PEG and NaCl decreased shoot height and increased ABA content in both cultivars”
e2“and reduced root length in cv. Tres”
Claim · model-written summary
NaCl reduced root length in cultivar Tres Rios.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle1
- Outcome
- root lengthe2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“The PEG and NaCl decreased shoot height and increased ABA content in both cultivars”
e2“and reduced root length in cv. Tres”
Claim · model-written summary
PEG increased chlorophyll content in leaves of cultivar Cotaxtla.
- Taxon
- riceOryza sativae0
- Material
- Cotaxtlae3
- Organ / stage
- leavese3
- Treatment
- PEGe3
- Outcome
- Chl contente3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e3“The PEG increased Chl content in cv. Cotaxtla leaves”
Claim · model-written summary
NaCl reduced shoot K+ content in cultivar Tres Rios.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle4
- Outcome
- shoot K+ contente4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e4“NaCl reduced shoot K+ content”
Claim · model-written summary
NaCl increased shoot and root Na+ content in both rice cultivars.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle4
- Outcome
- shoot and root Na+ contente5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e4“NaCl reduced shoot K+ content”
e5“increased shoot and root Na+ content in both cultivars”
Claim · model-written summary
NaCl decreased the shoot K+/Na+ ratio.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle4
- Outcome
- K+/Na+ ratioe6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e4“NaCl reduced shoot K+ content”
e6“thus resulting in a decreased K+/Na+ ratio”
Claim · model-written summary
PEG repressed two NAC genes in cultivar Cotaxtla.
- Taxon
- riceOryza sativae0
- Material
- Cotaxtlae7
- Treatment
- PEGe7
- Gene
- Os10g42130 and Os07g04560e7
- Outcome
- NAC genese7
- Direction
- repressede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e7“Of the 57 NAC genes evaluated, two of them were repressed (Os10g42130 and Os07g04560) and two other induced (Os02g34970 and OsNAC10) in cv. Cotaxtla in response to PEG”
Claim · model-written summary
PEG induced two NAC genes in cultivar Cotaxtla.
- Taxon
- riceOryza sativae0
- Material
- Cotaxtlae7
- Treatment
- PEGe7
- Gene
- Os02g34970 and OsNAC10e7
- Outcome
- NAC genese7
- Direction
- inducede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e7“Of the 57 NAC genes evaluated, two of them were repressed (Os10g42130 and Os07g04560) and two other induced (Os02g34970 and OsNAC10) in cv. Cotaxtla in response to PEG”
Claim · model-written summary
NaCl repressed three NAC genes in the rice cultivars.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle3
- Gene
- Os10g42130, Os07g04560 and Os08g10080e2
- Outcome
- NAC genese1
- Direction
- repressede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“Of the 57 NAC genes evaluated”
e2“three of them were repressed (Os10g42130, Os07g04560 and Os08g10080)”
e3“in response to NaCl”
Claim · model-written summary
NaCl induced six NAC genes in the rice cultivars.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle2
- Gene
- Os02g56600, Os02g34970, Os11g08210, Os05g34830, OsNAC6, and OsNAC10e2
- Outcome
- NAC genese1
- Direction
- inducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“Of the 57 NAC genes evaluated”
e2“six induced (Os02g56600, Os02g34970, Os11g08210, Os05g34830, OsNAC6, and OsNAC10) in response to NaCl”
Claim · model-written summary
PEG repressed two genes in cultivar Tres Rios.
- Taxon
- riceOryza sativae0
- Treatment
- PEGe2
- Gene
- Os10g42130 and Os07g04560e1
- Outcome
- genese1
- Direction
- repressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“we found two genes repressed (Os10g42130 and Os07g04560)”
e2“five induced (Os08g33910, Os03g60080, Os06g51070, OsNAC6, and OsNAC10) in response to PEG”
Claim · model-written summary
PEG induced five genes in cultivar Tres Rios.
- Taxon
- riceOryza sativae0
- Treatment
- PEGe2
- Gene
- Os08g33910, Os03g60080, Os06g51070, OsNAC6, and OsNAC10e2
- Outcome
- genese1
- Direction
- inducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“we found two genes repressed (Os10g42130 and Os07g04560)”
e2“five induced (Os08g33910, Os03g60080, Os06g51070, OsNAC6, and OsNAC10) in response to PEG”
Claim · model-written summary
NaCl repressed two genes in cultivar Tres Rios.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle2
- Gene
- Os10g42130 and Os07g04560e1
- Outcome
- genese1
- Direction
- repressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“while only two genes were repressed (Os10g42130 and Os07g04560) but 13 induced”
e2“13 induced (Os03g21060, Os08g39110, Os03g60080, Os01g15640, Os06g51070, Os09g33490, Os04g40130, Os12g29330, Os02g36880, Os11g08210, Os05g34830, OsNAC6, and OsNAC10) by NaCl”
Claim · model-written summary
NaCl induced 13 genes in cultivar Tres Rios.
- Taxon
- riceOryza sativae0
- Treatment
- NaCle2
- Gene
- Os03g21060, Os08g39110, Os03g60080, Os01g15640, Os06g51070, Os09g33490, Os04g40130, Os12g29330, Os02g36880, Os11g08210, Os05g34830, OsNAC6, and OsNAC10e2
- Outcome
- genese1
- Direction
- inducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“while only two genes were repressed (Os10g42130 and Os07g04560) but 13 induced”
e2“13 induced (Os03g21060, Os08g39110, Os03g60080, Os01g15640, Os06g51070, Os09g33490, Os04g40130, Os12g29330, Os02g36880, Os11g08210, Os05g34830, OsNAC6, and OsNAC10) by NaCl”
Claim · model-written summary
Osmotic stress affected Tres Rios more severely than Cotaxtla.
- Taxon
- riceOryza sativae0
- Treatment
- Osmotic stresse1
- Outcome
- affectede1
- Direction
- more severelye1
- Comparator
- cv. Cotaxtlae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rice cultivars”
e1“Osmotic stress affected more severely”
e2“than cv. Cotaxtla plants”
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