Abstract
Plants adjust their shoot growth to acclimate to changing environmental factors, such as to enhanced Ultraviolet-B (UV-B) radiation. However, people have ignored that plant roots can also respond to UV-B light. Here, we find the morphology curled wheat roots under UV-B radiation, that we call, "bending roots." The curly region is the transition zone of the root after observed at the cellular level. After exposed to enhanced UV-B radiation for 2 d (10.08 KJ/m2/d), cell size decreased and actin filaments gathered in wheat roots. We also find that H2O2 production increased and that content of the indole-3-acetic acid (IAA) increased remarkably. The pharmacological experiment revealed that actin filaments gathered and polymerized into bundles in the wheat root cells after irrigated H2O2 and IAA. These results indicated that actin filaments changed their distribution and formed the "bending root," which was related to H2O2 production and increase in IAA. Overall, actin filaments in wheat root cells could be a subcellular target of UV-B radiation, and its disruption determines root morphology.
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Claims 10
Claim · model-written summary
Wheat roots curled under UV-B radiation.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- UV-B radiatione0
- Outcome
- curled wheat rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we find the morphology curled wheat roots under UV-B radiation”
Claim · model-written summary
The curly region of the wheat root was its transition zone.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- transition zone of the roote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The curly region is the transition zone of the root after observed at the cellular level.”
t0“wheat”
Claim · model-written summary
Enhanced UV-B exposure for two days decreased wheat root cell size.
- Taxon
- wheatTriticum aestivume0
- Treatment
- enhanced UV-B radiation for 2 d (10.08 KJ/m2/d)e0
- Outcome
- cell sizee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After exposed to enhanced UV-B radiation for 2 d (10.08 KJ/m2/d), cell size decreased and actin filaments gathered in wheat roots.”
Claim · model-written summary
Enhanced UV-B exposure gathered actin filaments in wheat roots.
- Taxon
- wheatTriticum aestivume0
- Treatment
- enhanced UV-B radiation for 2 d (10.08 KJ/m2/d)e0
- Outcome
- actin filaments gatherede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After exposed to enhanced UV-B radiation for 2 d (10.08 KJ/m2/d), cell size decreased and actin filaments gathered in wheat roots.”
Claim · model-written summary
H2O2 production increased in wheat roots.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- H2O2 productione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We also find that H2O2 production increased and that content of the indole-3-acetic acid (IAA) increased remarkably.”
t0“wheat”
Claim · model-written summary
IAA content increased markedly in wheat roots.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- content of the indole-3-acetic acid (IAA)e0
- Direction
- increased remarkablye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“content of the indole-3-acetic acid (IAA) increased remarkably.”
t0“wheat”
Claim · model-written summary
H2O2 irrigation caused wheat root actin filaments to gather and polymerize into bundles.
- Taxon
- wheatTriticum aestivume0
- Treatment
- H2O2e0
- Outcome
- actin filaments gathered and polymerized into bundlese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“actin filaments gathered and polymerized into bundles in the wheat root cells after irrigated H2O2 and IAA.”
Claim · model-written summary
IAA irrigation caused wheat root actin filaments to gather and polymerize into bundles.
- Taxon
- wheatTriticum aestivume0
- Treatment
- IAAe0
- Outcome
- actin filaments gathered and polymerized into bundlese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“actin filaments gathered and polymerized into bundles in the wheat root cells after irrigated H2O2 and IAA.”
Claim · model-written summary
The authors infer that altered actin filament distribution forms bending roots in relation to H2O2 production and increased IAA.
- Taxon
- wheatTriticum aestivumt0
- Compound
- H2O2e0
- Outcome
- "bending root,"e0
- Qualifier
- actin filaments changed their distributione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“actin filaments changed their distribution and formed the "bending root," which was related to H2O2 production and increase in IAA.”
t0“wheat”
Claim · model-written summary
The authors propose disruption of root-cell actin filaments as determining wheat root morphology under UV-B.
- Taxon
- wheatTriticum aestivume0
- Treatment
- UV-B radiatione0
- Outcome
- root morphologye0
- Qualifier
- its disruptione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“actin filaments in wheat root cells could be a subcellular target of UV-B radiation, and its disruption determines root morphology.”
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