Expression profiling of Chondrus crispus (Rhodophyta) after exposure to methyl jasmonate

Collén, Jonas; Hervé, Cécile; Guisle-Marsollier, Isabelle; Léger, Jean J.; Boyen, Catherine

doi:10.1093/jxb/erl171

Cited by 54 publications

(48 citation statements)

References 29 publications

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“…MJA and BR (applied separately) altered the expression of several genes: some MJA-induced changes in the proteome were identical with BR-induced changes, other MJA-induced changes differed from BR-induced alterations (Ghasempour et al 1998). Brassinosteroids and MJA are found across the plant taxa from algae to angiosperms (Yokota et al 1987;Collén et al 2006).…”

Section: Mechanisms Involved In Desiccation Tolerance Arose Early In mentioning

confidence: 95%

The evolution of desiccation tolerance in angiosperm plants: a rare yet common phenomenon

Gaff

Oliver²

2013

Functional Plant Biol.

181

171

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Abstract. In a minute proportion of angiosperm species, rehydrating foliage can revive from airdryness or even from equilibration with air of~0% RH. Such desiccation tolerance is known from vegetative cells of some species of algae and of major groups close to the evolutionary path of the angiosperms. It is also found in the reproductive structures of some algae, moss spores and probably the aerial spores of other terrestrial cryptogamic taxa. The occurrence of desiccation tolerance in the seed plants is overwhelmingly in the aerial reproductive structures; the pollen and seed embryos. Spatially and temporally, pollen and embryos are close ontogenetic derivatives of the angiosperm microspores and megaspores respectively. This suggests that the desiccation tolerance of pollen and embryos derives from the desiccation tolerance of the spores of antecedent taxa and that the basic pollen/embryo mechanism of desiccation tolerance has eventually become expressed also in the vegetative tissue of certain angiosperm species whose drought avoidance is inadequate in microhabitats that suffer extremely xeric episodes. The protective compounds and processes that contribute to desiccation tolerance in angiosperms are found in the modern groups related to the evolutionary path leading to the angiosperms and are also present in the algae and in the cyanobacteria. The mechanism of desiccation tolerance in the angiosperms thus appears to have its origins in algal ancestors and possibly in the endosymbiotic cyanobacteria-related progenitor of chloroplasts and the bacteria-related progenitor of mitochondria. The mechanism may involve the regulation and timing of the accumulation of protective compounds and of other contributing substances and processes.

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Section: Mechanisms Involved In Desiccation Tolerance Arose Early In mentioning

confidence: 95%

The evolution of desiccation tolerance in angiosperm plants: a rare yet common phenomenon

Gaff

Oliver²

2013

Functional Plant Biol.

181

171

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“…The cell wall contains carrageenan, typically with ι-and κ-carrageenan in the gametophyte and λ-carrageenan in the sporophyte. In contrast to most other red algae, important scientific background knowledge exists for Chondrus, including studies on the mitochondrial genome (9), transcriptomics (10,11), interactions with pathogens (12), effects of UV radiation (13), stress metabolism (14), and population ecology (15,16). Thus, the availability of the C. crispus genome should help promote this organism as a model species for florideophyte algae and shed light on key aspects of eukaryotic evolution.…”

mentioning

confidence: 99%

Genome structure and metabolic features in the red seaweed Chondrus crispus shed light on evolution of the Archaeplastida

Collén

Porcel

Carré

et al. 2013

Proc. Natl. Acad. Sci. U.S.A.

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312

288

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Red seaweeds are key components of coastal ecosystems and are economically important as food and as a source of gelling agents, but their genes and genomes have received little attention. Here we report the sequencing of the 105-Mbp genome of the florideophyte Chondrus crispus (Irish moss) and the annotation of the 9,606 genes. The genome features an unusual structure characterized by gene-dense regions surrounded by repeat-rich regions dominated by transposable elements. Despite its fairly large size, this genome shows features typical of compact genomes, e.g., on average only 0.3 introns per gene, short introns, low median distance between genes, small gene families, and no indication of large-scale genome duplication. The genome also gives insights into the metabolism of marine red algae and adaptations to the marine environment, including genes related to halogen metabolism, oxylipins, and multicellularity (microRNA processing and transcription factors). Particularly interesting are features related to carbohydrate metabolism, which include a minimalistic gene set for starch biosynthesis, the presence of cellulose synthases acquired before the primary endosymbiosis showing the polyphyly of cellulose synthesis in Archaeplastida, and cellulases absent in terrestrial plants as well as the occurrence of a mannosylglycerate synthase potentially originating from a marine bacterium. To explain the observations on genome structure and gene content, we propose an evolutionary scenario involving an ancestral red alga that was driven by early ecological forces to lose genes, introns, and intergenetic DNA; this loss was followed by an expansion of genome size as a consequence of activity of transposable elements.T he red algae, together with the glaucophytes and the Chloroplastida, are members of the Archaeplastida, the phylogenetic group formed during the primary endosymbiosis event that gave rise to the first photosynthetic eukaryote. Red algal genomes, both plastid and nuclear, also contributed, via secondary endosymbiosis, to several other eukaryotic lineages, including

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“…PAL, a key enzyme in the first step of the phenylpropanoid pathway, is directly involved in the biosynthesis of phenolic compounds (Dixon and Pavia 1995). The transcription of defense-related genes in C. crispus, including glutathione S-transferase, heat shock protein 20, xenobiotic reductase, and phycocyanin lyase, is also upregulated by MeJA treatment (Collen et al 2006). In the brown seaweed Laminaria digitata, MeJA triggered an oxidative burst (Küpper et al 2009), with rapid release of reactive oxygen species (superoxide radicals and hydrogen peroxide).…”

Section: Discussionmentioning

confidence: 99%

Methyl jasmonate enhances phlorotannin production in the brown seaweed Ecklonia cava

et al. 2014

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Ecklonia cava is a brown seaweed widely distributed on the coasts of Korea and Japan and is used as food ingredient, animal feed, fertilizer, and medicine. E. cava contains a variety of compounds including carotenoids, fucoidans, and phlorotannins that play diverse biological and ecological roles. The marine algal polyphenols, the phlorotannins, found only in the brown algae have greater potential antioxidant activity than the polyphenols from terrestrial plants. Considering their significance in industrial applications, it would be beneficial to develop a simple method that can enhance amounts of phlorotannins in such algae. By adding 2 μM methyl jasmonate (MeJA) to the postharvest culture for 24 h, the crude phlorotannin content was increased by 156 %. The contents of individual phlorotannins, such as dieckol, phlorotannin 974A, phlorotannin 974B, and phlorofucofuroeckol-A were also increased by approximately 224, 176, 227, and 181 %, respectively. Additionally, MeJA treatment significantly enhanced the viability of E. cava tissue, suggesting that MeJA may prevent postharvest decay, at least in the short term.

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Expression profiling of Chondrus crispus (Rhodophyta) after exposure to methyl jasmonate

Cited by 54 publications

References 29 publications

The evolution of desiccation tolerance in angiosperm plants: a rare yet common phenomenon

The evolution of desiccation tolerance in angiosperm plants: a rare yet common phenomenon

Genome structure and metabolic features in the red seaweed Chondrus crispus shed light on evolution of the Archaeplastida

Methyl jasmonate enhances phlorotannin production in the brown seaweed Ecklonia cava

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