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Genes differentially expressed in Laurencia dendroidea 24, 48, and 72 h after inoculation with Vibrio madracius. Mutation of rpoS gene decreased resistance to environmental stresses, synthesis of extracellular products and virulence of Vibrio anguillarum.


Lipoic acid-dependent oxidative eenato of keto acids in mitochondria provides evidence for branched-chain amino acid catabolism in Arabidopsis. Besides, the occurrence of disease outbreaks in valuable reared seaweeds, such as Porphyra nori cultures, causes significant economic losses due to a reduction of annual production 9.

Plant Cell Environ Heat shock factor HsfB1 primes gene transcription and systemic acquired resistance in Arabidopsis. Effects of ethylene on tetrasporogenesis in Pterocladiella capillacea Rhodophyta 1.

Potent antibacterial activity of halogenated metabolites from Malaysian red algae, Laurencia majuscula Rhodomelaceae, Ceramiales.

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Phylogenetic analysis of epiphytic marine bacteria on hole-rotten diseased sporophytes of Laminaria japonica. The compartmentation of secondary biologai in vacuoles, possibly to avoid autotoxicity, was previously observed in plants and other seaweeds 36 Braz J Biol Expression profiling of the mannuronan C5-epimerase multigenic family in the brown alga Laminaria digitata Phaeophyceae under biotic stress conditions 1.

Identification bbiologia Arabidopsis ethylene-responsive element binding factors with distinct induction kinetics after pathogen infection. Parameter Value s Ctrl. Kelps feature systemic defense responses: Although the role bbiologia ET signaling in seaweeds was not demonstrated, the ability to synthesize and respond to this plant hormone was previously detected in Enteromorpha intestinalis 73 and Pterocladiella capillacea The upregulation of genes coding for NADPH oxidase and antioxidant enzymes suggests the occurrence of an oxidative burst.


Stress resistance and disease resistance in seaweeds: Vibrio madracius was isolated from the coral Madracis decactis sampled in Saint Peter and Saint Paul archipelago National Center for Biotechnology InformationU. Front Plant Sci 5: To identify the transcripts associated with the biosynthesis of crspo compounds, we analyzed the transcriptome of L.

Schmieder R, Edwards R. Oligoguluronates elicit an oxidative burst in the brown algal kelp Laminaria digitata. Concentration of Vibrio madracius in the culture medium in the presence 2 replicates [T1 and T2] and absence 2 replicates [CV1 and CV2] of Laurencia dendroidea. A recent study demonstrated the occurrence of genes coding for LRR kinases in the brown seaweed Ectocarpus siliculosus that, due to their molecular structure, were considered to represent candidate pathogen receptors Laurencia is a red seaweed genus widely distributed around the world, recognized for the biosynthesis of diverse halogenated secondary metabolites, especially terpenes, with relevant ecological 2324 and pharmacological 25— 29 activities.

Another gene coding for a protein kinase upregulated in L. Effects of coral reef benthic primary producers on dissolved organic carbon and microbial activity. S3which included Rho-related protein rac1 Fig.

Comparative RNA-seq analysis of early-infected peach leaves by the invasive phytopathogen Xanthomonas arboricola pv. Although a large array of genes responsible for the biosynthesis of terpenes was recently characterized in L. The present study provided novel insights into the complexity of seaweed-microbe interactions and the defensive strategies of L.

Phosphoinositide-signaling is one component of a robust plant defense response. Traffic of secondary metabolites to cell surface in the red alga Laurencia dendroidea depends on a two-step transport by the cytoskeleton. The response of L.

The effects of seaweed secondary metabolites on biofouling. Note that the figure is not drawn to scale. MAPK cascades in plant disease resistance signaling. The halogenated metabolites in L.


Essential role of the small GTPase Rac in disease resistance of rice. Expression profiling of Chondrus crispus Rhodophyta after exposure to methyl jasmonate.

Antibacterial halogenated metabolites from the Malaysian Laurencia species. Intra-cellular storage, transport and exocytosis of halogenated compounds in marine red alga Laurencia obtusa.

However, the genes involved in this cellular process are still largely unknown. In vivo and in vitro anti-inflammatory activity of neorogioltriol, a new diterpene extracted from the red algae Laurencia glandulifera.

Chronic stress and disease resistance in the genome model marine seaweed Ectocarpus siliculosus. Regulation of primary plant metabolism during plant-pathogen interactions and its contribution to plant defense.


For example, an increase in the expression of genes involved in cellular energy was detected through s uppression s ubtractive h ybridization SSH following the exposure of Laminaria digitata to oligoguluronates The seaweed RNA was sequenced, providing an unprecedentedly high coverage of the transcriptome of Laurenciaand the gene expression levels were compared between control and inoculated samples after 24, 48, and 72 h.

Some of these halogenated compounds are able to prevent the growth of marine bacteria 30— Occasional pathogenic bacteria promoting ice-ice disease renaro the carrageenan-producing red algae Kappaphycus alvarezii and Eucheuma denticulatum Solieriaceae, Gigartinales, Rhodophyta.

Most of the genes differentially expressed were upregulated in the inoculated samples of L. These findings may corroborate the occurrence of increased vesicle transport in Laurencia as a response to microbes Accordingly, biolovia symptoms were not observed in natural populations of L. The final concentration of V.