Shoot-applied polyamines suppress nodule formation in soybean (Glycine max)

Terakado, Junko; Yoneyama, T.; Fujihara, Shinsuke

doi:10.1016/j.jplph.2005.05.007

Cited by 46 publications

(41 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In light of the currently proposed signal function of polyamines by which various pathogenesis-related proteins are induced not to engage in pathogenic attack (155,171,176), these biogenic amines seem to play an important regulatory role in the formation of nodules as well. Recent findings of our group have indicated that shoot polyamines are involved in the systemic regulation of soybean root nodules (158) and that their effect is closely associated with the action of brassinosteroid hormone (157). There have been many other reports that plant hormones such as methyl jasmonic acid (100), abscisic acid (151), salycillic acid (132) and ethylene (86) suppress nodulation on the roots.…”

Section: Resultsmentioning

confidence: 99%

Biogenic Amines in Rhizobia and Legume Root Nodules

Fujihara

2009

Microb. Environ.

Self Cite

View full text Add to dashboard Cite

Root-nodule bacteria (rhizobia) are of great importance for nitrogen acquisition through symbiotic nitrogen fixation in a wide variety of leguminous plants. These bacteria differ from most other soil microorganisms by taking dual forms, i.e. a free-living form in soils and a symbiotic form inside of host legumes. Therefore, they should have a versatile strategy for survival, whether inhabiting soils or root nodules formed through rhizobia-legume interactions. Rhizobia generally contain large amounts of the biogenic amine homospermidine, an analog of spermidine which is an essential cellular component in most living systems. The external pH, salinity and a rapid change in osmolarity are thought to be significant environmental factors affecting the persistence of rhizobia. The present review describes the regulation of homospermidine biosynthesis in response to environmental stress and its possible functional role in rhizobia. Legume root nodules, an alternative habitat of rhizobia, usually contain a variety of biogenic amines besides homospermidine and the occurrence of some of these amines is closely associated with rhizobial infections. In the second half of this review, novel biogenic amines found in certain legume root nodules and the mechanism of their synthesis involving cooperation between the rhizobia and host legume cells are also described.

show abstract

Section: Resultsmentioning

confidence: 99%

Biogenic Amines in Rhizobia and Legume Root Nodules

Fujihara

2009

Microb. Environ.

Self Cite

View full text Add to dashboard Cite

show abstract

“…16 Methyl jasmonate and brassinosteroid are projected as the shoot derived inhibitors for AON. 17,18 In M. truncatula, both ABA and ethylene are well characterized internal cues that serve as local negative regulators. In the ethylene-insensitive mutant, sickle 19 where SICKLE encodes for the M. truncatula ortholog of Arabidopsis ethylene signaling protein, EIN2 20 the number of successful bacterial infections and nodules are substantially increased.…”

mentioning

confidence: 99%

Does SUNN-SYMRK Crosstalk occur in Medicago truncatula for regulating nodule organogenesis?

Saha

Dasgupta

2015

Plant Signaling & Behavior

View full text Add to dashboard Cite

“…The sunn-1 mutant has a defect in long-distance auxin transport that may affect nodule number (van Noorden et al, 2006); cytokinin receptor mutations can suppress the nodule number defect of har1 (Murray et al, 2007) and sunn-1 (E. Schnabel and J. Frugoli, unpublished data); and inducing abscisic acid insensitivity by expression of a dominant negative allele of Arabidopsis ABSCISIC ACID INSENSITIVE1 results in hypernodulation (Ding et al, 2008). Methyl jasmonate and brassinosteroid have also been implicated in nodule number regulation (Nakagawa and Kawaguchi, 2006;Terakado et al, 2006).…”

mentioning

confidence: 99%

The ROOT DETERMINED NODULATION1 Gene Regulates Nodule Number in Roots of Medicago truncatula and Defines a Highly Conserved, Uncharacterized Plant Gene Family

et al. 2011

View full text Add to dashboard Cite

The formation of nitrogen-fixing nodules in legumes is tightly controlled by a long-distance signaling system in which nodulating roots signal to shoot tissues to suppress further nodulation. A screen for supernodulating Medicago truncatula mutants defective in this regulatory behavior yielded loss-of-function alleles of a gene designated ROOT DETERMINED NODULATION1 (RDN1). Grafting experiments demonstrated that RDN1 regulatory function occurs in the roots, not the shoots, and is essential for normal nodule number regulation. The RDN1 gene, Medtr5g089520, was identified by genetic mapping, transcript profiling, and phenotypic rescue by expression of the wild-type gene in rdn1 mutants. A mutation in a putative RDN1 ortholog was also identified in the supernodulating nod3 mutant of pea (Pisum sativum). RDN1 is predicted to encode a 357-amino acid protein of unknown function. The RDN1 promoter drives expression in the vascular cylinder, suggesting RDN1 may be involved in initiating, responding to, or transporting vascular signals. RDN1 is a member of a small, uncharacterized, highly conserved gene family unique to green plants, including algae, that we have named the RDN family.

show abstract

Shoot-applied polyamines suppress nodule formation in soybean (Glycine max)

Cited by 46 publications

References 32 publications

Biogenic Amines in Rhizobia and Legume Root Nodules

Biogenic Amines in Rhizobia and Legume Root Nodules

Does SUNN-SYMRK Crosstalk occur in Medicago truncatula for regulating nodule organogenesis?

The ROOT DETERMINED NODULATION1 Gene Regulates Nodule Number in Roots of Medicago truncatula and Defines a Highly Conserved, Uncharacterized Plant Gene Family

Contact Info

Product

Resources

About