Abstract
Drought stress severely limits the growth, development, and productivity of crops, and therefore understanding the mechanisms by which plants respond to drought is crucial. In this study, we cloned a maize NAC transcription factor, ZmNAC49, and identified its function in response to drought stress. We found that ZmNAC49 is localized in the nucleus and has transcriptional activation activity. ZmNAC49 expression is rapidly and strongly induced by drought stress, and overexpression enhances stress tolerance in maize. Overexpression also significant decreases the transpiration rate, stomatal conductance, and stomatal density in maize. Detailed study showed that ZmNAC49 overexpression affects the expression of genes related to stomatal development, namely ZmTMM, ZmSDD1, ZmMUTE, and ZmFAMA. In addition, we found that ZmNAC49 can directly bind to the promoter of ZmMUTE and suppress its expression. Taken together, our results show that the transcription factor ZmNAC49 represses ZmMUTE expression, reduces stomatal density, and thereby enhances drought tolerance in maize.
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Claims 9
Claim · model-written summary
ZmNAC49 localized in the nucleus.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZmNAC49 is localized in the nucleus”
t0“maize”
Claim · model-written summary
ZmNAC49 had transcriptional activation activity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZmNAC49 is localized in the nucleus and has transcriptional activation activity”
t0“maize”
Claim · model-written summary
Drought induced ZmNAC49 expression rapidly and strongly.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZmNAC49 expression is rapidly and strongly induced by drought stress”
t0“maize”
Claim · model-written summary
ZmNAC49 overexpression enhanced maize drought tolerance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overexpression enhances stress tolerance in maize”
t0“ZmNAC49”
Claim · model-written summary
Overexpression decreased maize transpiration rate and stomatal conductance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression also significant decreases the transpiration rate, stomatal conductance, and stomatal density in maize.”
Claim · model-written summary
Overexpression decreased maize stomatal density.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Overexpression also significant decreases the transpiration rate, stomatal conductance, and stomatal density in maize.”
Claim · model-written summary
ZmNAC49 overexpression altered expression of four stomatal development genes.
- Treatment
- ZmNAC49 overexpressione0
- Gene
- ZmTMM, ZmSDD1, ZmMUTE, and ZmFAMAe0
- Outcome
- expression of genes related to stomatal developmente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZmNAC49 overexpression affects the expression of genes related to stomatal development, namely ZmTMM, ZmSDD1, ZmMUTE, and ZmFAMA.”
t0“maize”
Claim · model-written summary
ZmNAC49 bound directly to the ZmMUTE promoter.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZmNAC49 can directly bind to the promoter of ZmMUTE”
t0“maize”
Claim · model-written summary
ZmNAC49 suppressed ZmMUTE expression.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZmNAC49 can directly bind to the promoter of ZmMUTE and suppress its expression”
t0“maize”
The same questions in other papers
drought · molecular: expression · Zea mays (maize)Positive and negative results
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- negative
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See all 65 papers →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.