Abstract
【Objective】The study determined the role of Ca2+ in the lateral roots growth of A rabidopsis thaliana regulated by heterotrimeric G protein and the possible signal transduction pathways.【Method】The wild type A.thaliana(ws) and its mutants in which heterotrimeric G protein α subunit gene GPA1 was null(gpa1-1,gpa1-2) or overexpressed(wGα,cGα) were used as main materials.By adding calcium channel blockers AlCl3,some morphological parameters of the lateral root growth of A.thaliana were measured and progressive factor analysis of the role of NAA,Ca2+,AlCl3 was carried out in mediums supplemented with different concentrations of NAA(0-0.2 mg/L).【Result】The impact on the lateral roots growth of 5 genotypes A.thaliana,NAA approach in the same concentration had no significant difference,but Ca2+(Sequence of the number of lateral roots was:mutantswild typeoverexpressed) and AlCl3 did.【Conc1usion】(1) Ca2+ channels might be downstream effectors of heterotrimeric G protein α subunit regulation.And Ca2+ might be downstream signal.The block of the number of Calcium channel blockers AlCl3 to calcium channel blockers on cell membrane might be blocked by a certain percentage,rather than an absolute number,and the mechanism was not clear.(2)Three factors played different roles in different levels and had different influence on the growth of roots of five different genotypes.The results of progressive factor analysis and other statistical analysis were basically consistent,so it was scientific and feasible.Further more,this analysis had a certain degree of innovation and should be popularized and applied.
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Claims 5
Claim · model-written summary
NAA at the same concentration showed no significant genotype difference in lateral root growth.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- NAAe0
- Outcome
- lateral roots growtht1
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NAA approach in the same concentration had no significant difference”
t0“Arabidopsis thaliana”
t1“lateral roots growth of Arabidopsis thaliana”
Claim · model-written summary
Ca2+ affected lateral root number across mutant, wild type and overexpression genotypes.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Ca2+e0
- Outcome
- number of lateral rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca2+(Sequence of the number of lateral roots was:mutantswild typeoverexpressed) and AlCl3 did”
t0“Arabidopsis thaliana”
Claim · model-written summary
AlCl3 affected lateral root growth among genotypes.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- AlCl3e0
- Outcome
- lateral roots growtht0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca2+(Sequence of the number of lateral roots was:mutantswild typeoverexpressed) and AlCl3 did”
t0“lateral roots growth of Arabidopsis thaliana”
Claim · model-written summary
Authors propose that calcium channels and Ca2+ act downstream of G protein alpha subunit regulation.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Gene
- heterotrimeric G protein α subunite0
- Compound
- Ca2+e0
- Outcome
- downstream effectorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca2+ channels might be downstream effectors of heterotrimeric G protein α subunit regulation.And Ca2+ might be downstream signal”
t0“Arabidopsis thaliana”
Claim · model-written summary
Progressive factor analysis and other statistical analyses yielded basically consistent results.
Verbatim
e0“The results of progressive factor analysis and other statistical analysis were basically consistent”
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