Abstract
Previous studies have identified miR169/NF-YA modules are important regulators of plant development and stress responses. Currently, reported genome sequence data offers an opportunity for global characterization of miR169 and NF-YA genes, which may provide insights into the molecular mechanisms of the miR169/NF-YA modules in maize. In our study, fourteen NF-YA transcription factors with conserved domains were identified based on maize genome loci. The miR169 gene family has 18 members that generate 10 mature products, and 8 of these mature miR169 members could target 7 of 14 ZmNF-YA genes in maize. The seven ZmNF-YA proteins were localized to the nucleus while lacked transcriptional activity. We investigated the expression patterns of the zma-miR169 members and their targeted ZmNF-YA genes in maize roots treated by drought stress (polyethylene glycol, PEG), hormone stress (abscisic acid, ABA), and salt stress (NaCl). The zma-miR169 family members were downregulated in short term (0 ∼ 48 h) and generally upregulated over the long term (15 days) in response to the three abiotic stress conditions. Most of the targeted ZmNF-YA genes exhibited a reverse correlation with zma-miR169 gene expression over both the short term and long term. Maize root elongation was promoted by PEG and ABA but repressed by NaCl over the long term. Apparently, ZmNF-YA14 expression perfectly matched the zma-miR169 expression and corresponded to root growth reversely.
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Claims 13
Claim · model-written summary
Fourteen NF-YA transcription factors with conserved domains were identified in the maize genome.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fourteen NF-YA transcription factors with conserved domains were identified based on maize genome loci”
Claim · model-written summary
The miR169 gene family has 18 members.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Roots”
e1“The miR169 gene family has 18 members that generate 10 mature products”
Claim · model-written summary
The miR169 gene family generates 10 mature products.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Roots”
e1“The miR169 gene family has 18 members that generate 10 mature products”
Claim · model-written summary
Eight mature miR169 members could target seven of the 14 ZmNF-YA genes in maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“8 of these mature miR169 members could target 7 of 14 ZmNF-YA genes in maize”
Claim · model-written summary
The seven ZmNF-YA proteins were localized to the nucleus.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“8 of these mature miR169 members could target 7 of 14 ZmNF-YA genes in maize”
e3“The seven ZmNF-YA proteins were localized to the nucleus while lacked transcriptional activity”
Claim · model-written summary
The seven ZmNF-YA proteins lacked transcriptional activity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“8 of these mature miR169 members could target 7 of 14 ZmNF-YA genes in maize”
e3“The seven ZmNF-YA proteins were localized to the nucleus while lacked transcriptional activity”
Claim · model-written summary
zma-miR169 family members were downregulated over the short term (0 to 48 h) under PEG, ABA and NaCl stress in maize roots.
- Treatment
- drought stress (polyethylene glycol, PEG), hormone stress (abscisic acid, ABA), and salt stress (NaCl)e7
- Gene
- zma-miR169e4
- Outcome
- zma-miR169 family memberse4
- Direction
- downregulatede4
- Qualifier
- short term (0 ∼ 48 h)e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Roots”
e4“The zma-miR169 family members were downregulated in short term (0 ∼ 48 h) and generally upregulated over the long term (15 days) in response to the three abiotic stress conditions”
e7“drought stress (polyethylene glycol, PEG), hormone stress (abscisic acid, ABA), and salt stress (NaCl)”
Claim · model-written summary
zma-miR169 family members were generally upregulated over the long term (15 days) under PEG, ABA and NaCl stress in maize roots.
- Treatment
- drought stress (polyethylene glycol, PEG), hormone stress (abscisic acid, ABA), and salt stress (NaCl)e7
- Gene
- zma-miR169e4
- Outcome
- zma-miR169 family memberse4
- Direction
- generally upregulatede4
- Qualifier
- over the long term (15 days)e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Roots”
e4“The zma-miR169 family members were downregulated in short term (0 ∼ 48 h) and generally upregulated over the long term (15 days) in response to the three abiotic stress conditions”
e7“drought stress (polyethylene glycol, PEG), hormone stress (abscisic acid, ABA), and salt stress (NaCl)”
Claim · model-written summary
Most targeted ZmNF-YA genes showed a reverse correlation with zma-miR169 expression over both the short and long term.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Roots”
e5“Most of the targeted ZmNF-YA genes exhibited a reverse correlation with zma-miR169 gene expression over both the short term and long term”
Claim · model-written summary
Root elongation of maize was promoted by PEG and ABA over the long term.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Maize root elongation was promoted by PEG and ABA but repressed by NaCl over the long term”
Claim · model-written summary
Root elongation of maize was repressed by NaCl over the long term.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Maize root elongation was promoted by PEG and ABA but repressed by NaCl over the long term”
Claim · model-written summary
ZmNF-YA14 expression perfectly matched zma-miR169 expression.
- Gene
- ZmNF-YA14e7
- Outcome
- ZmNF-YA14 expressione7
- Direction
- perfectly matchede7
- Comparator
- zma-miR169 expressione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Roots”
e7“ZmNF-YA14 expression perfectly matched the zma-miR169 expression and corresponded to root growth reversely”
Claim · model-written summary
ZmNF-YA14 expression corresponded reversely to root growth in maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize Roots”
e7“ZmNF-YA14 expression perfectly matched the zma-miR169 expression and corresponded to root growth reversely”
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