scholarly journals Sugar transporters in Fabaceae, featuring SUT MST and SWEET families of the model plant Medicago truncatula and the agricultural crop Pisum sativum

PLoS ONE ◽  
2019 ◽  
Vol 14 (9) ◽  
pp. e0223173 ◽  
Author(s):  
Joan Doidy ◽  
Ugo Vidal ◽  
Rémi Lemoine
2020 ◽  
Author(s):  
Celine Mens ◽  
April H. Hastwell ◽  
Huanan Su ◽  
Peter M. Gresshoff ◽  
Ulrike Mathesius ◽  
...  

AbstractLegume plants form a symbiosis with N2-fixing soil rhizobia, resulting in new root organs called nodules that enable N2-fixation. Nodulation is a costly process that is tightly regulated by the host through Autoregulation of Nodulation (AON) and nitrate-dependent regulation of nodulation. Both pathways require legume-specific CLAVATA/ESR-related (CLE) peptides. Nitrogen-induced nodulation-suppressing CLE peptides have not previously been characterised in Medicago truncatula, with only rhizobia-induced MtCLE12 and MtCLE13 identified. Here, we report on novel peptides MtCLE34 and MtCLE35 in nodulation control pathways. The nodulation-suppressing CLE peptides of five legume species were classified into three clades based on sequence homology and phylogeny. This approached identified MtCLE34 and MtCLE35 and four new CLE peptide orthologues of Pisum sativum. Whereas MtCLE12 and MtCLE13 are induced by rhizobia, MtCLE34 and MtCLE35 respond to both rhizobia and nitrate. MtCLE34 was identified as a pseudogene lacking a functional CLE-domain. Overexpression of MtCLE12, MtCLE13 and MtCLE35 inhibits nodulation. Together, our findings indicate that MtCLE12 and MtCLE13 have a distinct role in AON, while MtCLE35 regulates nodule numbers in a rhizobia- and nitrate-dependent manner. MtCLE34 likely had a similar role to MtCLE35 but its function was lost due to a nonsense mutation resulting in the loss of the mature peptide.


Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1026
Author(s):  
Juan Pablo Renzi ◽  
Jan Brus ◽  
Stergios Pirintsos ◽  
László Erdős ◽  
Martin Duchoslav ◽  
...  

Medicago truncatula (barrel medic) and Pisum sativum subsp. elatius (wild pea) accessions originating from variable environmental conditions in the Mediterranean basin were used to study physical seed dormancy (PY) release. The effect of soil burial on PY release was tested on 112 accessions of medic and 46 accessions of pea over the period of 3 months in situ at three common gardens (Hungary, Spain and Greece) from 2017 through 2019. PY release after soil exhumation followed by experimental laboratory germination of remaining dormant seeds (wet, 25 °C, 21 days) were related to the environmental conditions of the common garden and macroclimatic variables of the site of origin of the accessions. Higher PY release was observed in buried seeds under humid rather than under dry and hot environments. Exposure of remaining dormant seeds to experimental laboratory conditions increased total PY release up to 70% and 80% in barrel medic and wild pea, respectively. Wild pea showed higher phenotypic plasticity on PY release than barrel medic, which had higher bet-hedging within-season. Wild pea showed lower bet-hedging among-season (PY < 10%) in relation to precipitation than barrel medic, which was more conservative (PY ≈ 20%). Observed variability suggests that these species have the capability to cope with ongoing climate change.


PROTOPLASMA ◽  
2019 ◽  
Vol 256 (4) ◽  
pp. 983-996 ◽  
Author(s):  
Anna V. Tsyganova ◽  
Elena V. Seliverstova ◽  
Nicholas J. Brewin ◽  
Viktor E. Tsyganov

2005 ◽  
Vol 56 (418) ◽  
pp. 2019-2028 ◽  
Author(s):  
M. Abirached-Darmency ◽  
M. R. Abdel-gawwad ◽  
G. Conejero ◽  
J. L. Verdeil ◽  
R. Thompson

Author(s):  
A. V. Tsyganova ◽  
E. V. Seliverstova ◽  
N. J. Brewin ◽  
V. E. Tsyganov

The infection of root cells of legumes with rhizobia involves the gradual remodelling of the plant-microbial interface. General and species-specific features of symbiotic interface remodelling during nodule development were demonstrated.


1990 ◽  
Vol 8 (1) ◽  
pp. 40-49 ◽  
Author(s):  
David G. Barker ◽  
Sylvie Bianchi ◽  
François Blondon ◽  
Yvette Dattée ◽  
Gérard Duc ◽  
...  

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