Role of NO in lichens

Expósito, Joana R.; Barreno, Eva; Catalá, Myriam

doi:10.1016/b978-0-12-818797-5.00027-3

Cited by 3 publications

(1 citation statement)

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“…In particular, Trebouxia sp. TR9 responds well against oxidative stress [ 33 ], which is a crucial challenge for lichens exposed to cyclic desiccation and rehydration events, nitric oxide (NO) [ 34 , 35 , 36 , 37 , 38 ], osmotic and saline stresses [ 39 , 40 ], and photooxidants or heavy metal accumulation [ 41 , 42 , 43 ]. The better physiological performance of Trebouxia sp.…”

Section: Introductionmentioning

confidence: 99%

Trebouxia lynnae sp. nov. (Former Trebouxia sp. TR9): Biology and Biogeography of an Epitome Lichen Symbiotic Microalga

Barreno

Muggia

Chiva

et al. 2022

Biology

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Two microalgal species, Trebouxia jamesii and Trebouxia sp. TR9, were detected as the main photobionts coexisting in the thalli of the lichen Ramalina farinacea. Trebouxia sp. TR9 emerged as a new taxon in lichen symbioses and was successfully isolated and propagated in in vitro culture and thoroughly investigated. Several years of research have confirmed the taxon Trebouxia sp. TR9 to be a model/reference organism for studying mycobiont–photobiont association patterns in lichen symbioses. Trebouxia sp. TR9 is the first symbiotic, lichen-forming microalga for which an exhaustive characterization of cellular ultrastructure, physiological traits, genetic and genomic diversity is available. The cellular ultrastructure was studied by light, electron and confocal microscopy; physiological traits were studied as responses to different abiotic stresses. The genetic diversity was previously analyzed at both the nuclear and organelle levels by using chloroplast, mitochondrial, and nuclear genome data, and a multiplicity of phylogenetic analyses were carried out to study its intraspecific diversity at a biogeographical level and its specificity association patterns with the mycobiont. Here, Trebouxia sp. TR9 is formally described by applying an integrative taxonomic approach and is presented to science as Trebouxia lynnae, in honor of Lynn Margulis, who was the primary modern proponent for the significance of symbiosis in evolution. The complete set of analyses that were carried out for its characterization is provided.

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Section: Introductionmentioning

confidence: 99%

Trebouxia lynnae sp. nov. (Former Trebouxia sp. TR9): Biology and Biogeography of an Epitome Lichen Symbiotic Microalga

Barreno

Muggia

Chiva

et al. 2022

Biology

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Terpenoids and sterols from lichens

Castañeta,

Mamani,

Mita

et al. 2024

Phytochem Rev

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Review on the toxic effect of fluorine and lead on lichen metabolism

Benhamada,

Leghouchi

2024

International Journal of Secondary Metabolite

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Thanks to their ability to absorb large amounts of trace elements from the atmosphere, lichens are widely used as bioaccumulators and bioindicators of air pollution. Among air pollutants, heavy metals represented by lead are the most important contributors to the deterioration of ecosystems. Fluorine is prevalent in a wide range of environmental matrices, even in trace amounts, and is one of the most phytotoxic halogens to plants. When lichens are exposed to air pollution, they frequently undergo structural, morphological and physiological alterations, and exhibit several coping strategies to combat and tolerate stressful situations. This manuscript presents general information about lichens, fluorine, and lead as well as the toxic effect of these two air pollutants on lichens, and the means of combat used by lichens to respond to fluorine and lead-induced stress.

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Role of NO in lichens

Cited by 3 publications

References 130 publications

Trebouxia lynnae sp. nov. (Former Trebouxia sp. TR9): Biology and Biogeography of an Epitome Lichen Symbiotic Microalga

Trebouxia lynnae sp. nov. (Former Trebouxia sp. TR9): Biology and Biogeography of an Epitome Lichen Symbiotic Microalga

Terpenoids and sterols from lichens

Review on the toxic effect of fluorine and lead on lichen metabolism

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