In:
Plant, Cell & Environment, Wiley, Vol. 37, No. 7 ( 2014-07), p. 1516-1535
Abstract:
Molecular interaction between NRT2.1 transcript levels and the ethylene signaling pathway under nitrate deficiency is still elusive. Here, we report a low nitrate (LN) treatment‐induced rapid burst of ethylene production and regulated expression of ethylene signaling components CTR1 , EIN3 and EIL1 in wild‐type Arabidopsis thaliana (Col‐0) seedlings, and enhanced ethylene response reporter EBS:GUS activity in both Col‐0 and the ethylene mutants ein3‐1eil1‐1 and ctr1‐1 . Comparison of ethylene production and EBS:GUS activity between nrt1.1 , nrt2.1 mutants and Col‐0 indicated that this up‐regulation of NRT2.1 expression caused a positive effect on ethylene biosynthesis/signaling under LN treatment, and ethylene down‐regulated NRT2.1 expression and reduced the high‐affinity nitrate uptake. Together, these findings uncover a negative feedback loop between NRT2.1 expression and ethylene biosynthesis/signaling under nitrate deficiency, which may contribute to finely tuning of plant nitrate acquisition during exploring dynamic soil conditions. Commentary: Advances in measurements and models of photosynthetic carbon isotope discrimination in C3 plants
Type of Medium:
Online Resource
ISSN:
0140-7791
,
1365-3040
DOI:
10.1111/pce.2014.37.issue-7
Language:
English
Publisher:
Wiley
Publication Date:
2014
detail.hit.zdb_id:
391893-2
detail.hit.zdb_id:
2020843-1
SSG:
12
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