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Bioelectromagnetics
2018 ; 39
(5
): 361-374
Nephropedia Template TP gab.com Text Twit Text FOAVip Twit Text # English Wikipedia
Reduction of the geomagnetic field delays Arabidopsis thaliana flowering time
through downregulation of flowering-related genes
#MMPMID29709075
Agliassa C
; Narayana R
; Bertea CM
; Rodgers CT
; Maffei ME
Bioelectromagnetics
2018[Jul]; 39
(5
): 361-374
PMID29709075
show ga
Variations in magnetic field (MF) intensity are known to induce plant
morphological and gene expression changes. In Arabidopsis thaliana Col-0,
near-null magnetic field (NNMF, i.e., <100?nT MF) causes a delay in the
transition to flowering, but the expression of genes involved in this response
has been poorly studied. Here, we showed a time-course quantitative analysis of
the expression of both leaf (including clock genes, photoperiod pathway, GA20ox,
SVP, and vernalization pathway) and floral meristem (including GA2ox, SOC1,
AGL24, LFY, AP1, FD, and FLC) genes involved in the transition to flowering in A.
thaliana under NNMF. NNMF induced a delayed flowering time and a significant
reduction of leaf area index and flowering stem length, with respect to controls
under geomagnetic field. Generation experiments (F(1) - and F(2) -NNMF) showed
retention of flowering delay. The quantitative expression (qPCR) of some A.
thaliana genes expressed in leaves and floral meristem was studied during
transition to flowering. In leaves and flowering meristem, NNMF caused an early
downregulation of clock, photoperiod, gibberellin, and vernalization pathways and
a later downregulation of TSF, AP1, and FLC. In the floral meristem, the
downregulation of AP1, AGL24, FT, and FLC in early phases of floral development
was accompanied by a downregulation of the gibberellin pathway. The progressive
upregulation of AGL24 and AP1 was also correlated to the delayed flowering by
NNMF. The flowering delay is associated with the strong downregulation of FT,
FLC, and GA20ox in the floral meristem and FT, TSF, FLC, and GA20ox in leaves.
Bioelectromagnetics. 39:361-374, 2018. © 2018 The Authors. Bioelectromagnetics
Published by Wiley Periodicals, Inc.
Please enable JavaScript to view the comments powered by Disqus. |*Magnetic Fields
[MESH] |Arabidopsis Proteins/*metabolism
[MESH] |Arabidopsis/anatomy & histology/*growth & development/*metabolism
[MESH] |Cluster Analysis
[MESH] |Down-Regulation
[MESH] |Flowers/*growth & development/*metabolism
[MESH] |Gene Expression Regulation, Plant/physiology
[MESH] |Meristem/growth & development/metabolism
[MESH] |Plant Leaves/anatomy & histology/growth & development/metabolism
[MESH] |Real-Time Polymerase Chain Reaction
[MESH] DeepDyve Pubget Overpricing