Abstract
Zea mays L. exhibits a strong growth reduction in response to NaCl-induced stress that is attributable to a decline of cell division and elongation. Wall-loosening expansins are of major impact for cell wall extensibility and growth. This study provides an analysis of the impact of an 8-d 100 mM NaCl stress treatment on the mRNA abundance of the α-and β-expansin sub-families using real-time quantitative RT-PCR. Moreover, we provide a comparative study of plants that contrast in their degree of salt resistance in order to reveal contrasting features of physiological functions that may bear a causal relation to the differential response of plants to salt. In result, the transcript abundance of wall-loosening β-expansins was impaired in size-reduced leaves of the salt-sensitive hybrid but not in leaves of the salt-resistant hybrid that maintained growth. This indicates a role for the β-expansins in processes related to salt resistance.
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Claims 5
Claim · model-written summary
Salt stress impaired β-expansin transcript abundance in leaves of the salt-sensitive hybrid.
- Material
- salt-sensitive hybride0
- Organ / stage
- leavese0
- Treatment
- 8-d 100 mM NaCl stress treatmente1
- Gene
- β-expansinse0
- Outcome
- transcript abundance of wall-loosening β-expansinse0
- Direction
- impairede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transcript abundance of wall-loosening β-expansins was impaired in size-reduced leaves of the salt-sensitive hybrid”
e1“an 8-d 100 mM NaCl stress treatment”
t0“maize”
Claim · model-written summary
β-expansin transcript abundance was not impaired in leaves of the salt-resistant hybrid under salt stress.
- Material
- salt-resistant hybride0
- Organ / stage
- leavese0
- Treatment
- 8-d 100 mM NaCl stress treatmente1
- Gene
- β-expansinse0
- Outcome
- transcript abundance of wall-loosening β-expansinse0
- Direction
- no_changeinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transcript abundance of wall-loosening β-expansins was impaired in size-reduced leaves of the salt-sensitive hybrid but not in leaves of the salt-resistant hybrid that maintained growth.”
e1“an 8-d 100 mM NaCl stress treatment”
t0“maize”
Claim · model-written summary
The salt-sensitive hybrid had reduced leaf size under salt stress.
- Material
- salt-sensitive hybride0
- Treatment
- 8-d 100 mM NaCl stress treatmente1
- Outcome
- leavese0
- Direction
- size-reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“size-reduced leaves of the salt-sensitive hybrid”
e1“an 8-d 100 mM NaCl stress treatment”
t0“maize”
Claim · model-written summary
The salt-resistant hybrid maintained growth under salt stress.
- Material
- salt-resistant hybride0
- Treatment
- 8-d 100 mM NaCl stress treatmente1
- Outcome
- growthe0
- Direction
- maintainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt-resistant hybrid that maintained growth”
e1“an 8-d 100 mM NaCl stress treatment”
t0“maize”
Claim · model-written summary
The authors infer a role for β-expansins in salt resistance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This indicates a role for the β-expansins in processes related to salt resistance.”
t0“maize”
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