Abstract
Auxin regulates diverse aspects of flower development in plants, such as differentiation of the apical meristem, elongation of the stamen, and maturation of anthers and pollen. It is known that auxin accumulates in pollen, but little information regarding the biological relevance of auxin in this tissue at different times of development is available. In this work, we manipulated the amount of free auxin specifically in developing pollen, using transgenic Arabidopsis lines that express the bacterial indole-3-acetic acid-lysine synthetase (iaaL) gene driven by a collection of pollen-specific promoters. The iaaL gene codes for an indole-3-acetic acid-lysine synthetase that catalyzes the conversion of free auxin into inactive indole-3-acetyl-l-lysine. The transgenic lines showed several abnormalities, including the absence of short stamina, a diminished seed set, aberrant pollen tubes, and perturbations in the synchronization of anther dehiscence and stamina development. This article describes the importance of auxin accumulation in pollen and its role in stamina and anther development.
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Claims 4
Claim · model-written summary
Arabidopsis lines expressing iaaL in pollen lacked short stamina.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- transgenic linese0
- Gene
- iaaLt1
- Outcome
- absence of short staminae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transgenic lines showed several abnormalities, including the absence of short stamina”
t0“Arabidopsis”
t1“using transgenic Arabidopsis lines that express the bacterial indole-3-acetic acid-lysine synthetase (iaaL) gene driven by a collection of pollen-specific promoters. The iaaL gene codes for an indole-3-acetic acid-lysine synthetase that catalyzes the conversion of free auxin into inactive indole-3-acetyl-l-lysine. The transgenic lines showed several abnormalities, including the absence of short stamina, a diminished seed set, aberrant pollen tubes, and perturbations in the synchronization of anther dehiscence and stamina development.”
Claim · model-written summary
Arabidopsis lines expressing iaaL in pollen had diminished seed set.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- transgenic linest1
- Gene
- iaaLt1
- Outcome
- seed sete0
- Direction
- diminishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a diminished seed set”
t0“Arabidopsis”
t1“using transgenic Arabidopsis lines that express the bacterial indole-3-acetic acid-lysine synthetase (iaaL) gene driven by a collection of pollen-specific promoters. The iaaL gene codes for an indole-3-acetic acid-lysine synthetase that catalyzes the conversion of free auxin into inactive indole-3-acetyl-l-lysine. The transgenic lines showed several abnormalities, including the absence of short stamina, a diminished seed set, aberrant pollen tubes, and perturbations in the synchronization of anther dehiscence and stamina development.”
Claim · model-written summary
Arabidopsis lines expressing iaaL in pollen had aberrant pollen tubes.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- transgenic linest1
- Gene
- iaaLt1
- Outcome
- aberrant pollen tubese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“aberrant pollen tubes”
t0“Arabidopsis”
t1“using transgenic Arabidopsis lines that express the bacterial indole-3-acetic acid-lysine synthetase (iaaL) gene driven by a collection of pollen-specific promoters. The iaaL gene codes for an indole-3-acetic acid-lysine synthetase that catalyzes the conversion of free auxin into inactive indole-3-acetyl-l-lysine. The transgenic lines showed several abnormalities, including the absence of short stamina, a diminished seed set, aberrant pollen tubes, and perturbations in the synchronization of anther dehiscence and stamina development.”
Claim · model-written summary
Arabidopsis lines expressing iaaL in pollen showed disturbed synchronization of anther dehiscence and stamina development.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- transgenic linest1
- Gene
- iaaLt1
- Outcome
- perturbations in the synchronization of anther dehiscence and stamina developmente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“perturbations in the synchronization of anther dehiscence and stamina development.”
t0“Arabidopsis”
t1“using transgenic Arabidopsis lines that express the bacterial indole-3-acetic acid-lysine synthetase (iaaL) gene driven by a collection of pollen-specific promoters. The iaaL gene codes for an indole-3-acetic acid-lysine synthetase that catalyzes the conversion of free auxin into inactive indole-3-acetyl-l-lysine. The transgenic lines showed several abnormalities, including the absence of short stamina, a diminished seed set, aberrant pollen tubes, and perturbations in the synchronization of anther dehiscence and stamina development.”
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