Abstract
Bryophytes constitute a group of non-vascular plants that include mosses, liverworts and hornworts. Our research group has initiated the search and study of Mexican bryophyte species that have high levels of drought tolerance. Mature gametophytes and sporophytes of the moss Ceratodom stenocarpus and the hepatic Targionia hypophylla were collected before the rainy season at a Juniperus forest localized in Tlaxcala state. Phenotypic analyses under water-deficit conditions showed that these species can withstand a total loss of water content from their cell protoplasm, but they can also rehydrate rapidly after watering. Thus, the selected bryophytes present clear characteristics of the resurrection phenomenon (desiccation tolerance). Spores obtained from superficially disinfected sporophytes were used to perform germination in vitro assays in the presence and absence of salt (NaCl) and osmotic agents at different concentrations. To investigate the effect of salt and osmotic stress on adult stages, we focused experiments on transferring mature tissues to stressing plates. The obtained results showed that both studied species are osmotic stress tolerant but salt sensitive plants at both germination and mature stages of development.
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Claims 6
Claim · model-written summary
Ceratodom stenocarpus withstands total cellular water loss and rapidly rehydrates after watering.
- Taxon
- Ceratodom stenocarpuse0
- Outcome
- withstand a total loss of water content from their cell protoplasme1
- Qualifier
- rehydrate rapidly after wateringe1
Not reportedDirection
Verbatim
e0“the moss Ceratodom stenocarpus and the hepatic Targionia hypophylla”
e1“these species can withstand a total loss of water content from their cell protoplasm, but they can also rehydrate rapidly after watering”
Claim · model-written summary
Targionia hypophylla withstands total cellular water loss and rapidly rehydrates after watering.
- Taxon
- Targionia hypophylla
Targionia hypophyllae0 - Outcome
- withstand a total loss of water content from their cell protoplasme1
- Qualifier
- rehydrate rapidly after wateringe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the moss Ceratodom stenocarpus and the hepatic Targionia hypophylla”
e1“these species can withstand a total loss of water content from their cell protoplasm, but they can also rehydrate rapidly after watering”
Claim · model-written summary
Ceratodom stenocarpus is osmotic-stress tolerant at germination and mature stages.
- Taxon
- Ceratodom stenocarpuse0
- Organ / stage
- germination and mature stages of developmente1
- Outcome
- osmotic stress tolerante1
Not reportedDirection
Verbatim
e0“the moss Ceratodom stenocarpus and the hepatic Targionia hypophylla”
e1“both studied species are osmotic stress tolerant but salt sensitive plants at both germination and mature stages of development”
Claim · model-written summary
Targionia hypophylla is osmotic-stress tolerant at germination and mature stages.
- Taxon
- Targionia hypophyllaTargionia hypophyllae0
- Organ / stage
- germination and mature stages of developmente1
- Outcome
- osmotic stress tolerante1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the moss Ceratodom stenocarpus and the hepatic Targionia hypophylla”
e1“both studied species are osmotic stress tolerant but salt sensitive plants at both germination and mature stages of development”
Claim · model-written summary
Ceratodom stenocarpus is salt-sensitive at germination and mature stages.
- Taxon
- Ceratodom stenocarpuse0
- Organ / stage
- germination and mature stages of developmente1
- Outcome
- salt sensitivee1
Not reportedDirection
Verbatim
e0“the moss Ceratodom stenocarpus and the hepatic Targionia hypophylla”
e1“both studied species are osmotic stress tolerant but salt sensitive plants at both germination and mature stages of development”
Claim · model-written summary
Targionia hypophylla is salt-sensitive at germination and mature stages.
- Taxon
- Targionia hypophyllaTargionia hypophyllae0
- Organ / stage
- germination and mature stages of developmente1
- Outcome
- salt sensitivee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the moss Ceratodom stenocarpus and the hepatic Targionia hypophylla”
e1“both studied species are osmotic stress tolerant but salt sensitive plants at both germination and mature stages of development”