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Mostrando publicaciones 1-20 de 30
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A first insight into the structure and function of rhizosphere microbiota in antarctic plants using shotgun metagenomic
Molina-Montenegro, Marco A.; Ballesteros, Gabriel I.; Castro-Nallar, Eduardo; Meneses, Claudio; Gallardo-Cerda, Jorge; Torres-Díaz, Cristian (2019)Antarctic vascular plants such as Deschampsia antarctica (Da) could generate more suitable micro-environmental conditions for the establishment of other plants like Colobanthus quitensis (Cq). Although positive plant–plant ...
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A seed-borne endophyte mediates plant drought responses and intergenerational effects on seed characteristics
Zarraga-Barco, F.; Ueno, Andrea C.; Casabella, M.P.; Casas, C.; Molina-Montenegro, Marco A.; Ramos, P.; Schnyder, H.; Gundel, Pedro E. (2024)Global warming is expected to increase drought severity in diverse environments, impacting plant performance. Plants acclimate to drought by mechanisms like stomatal closure and osmotic adjustment. Maternally inherited ...
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A systematic review on the effects of Epichloë fungal endophytes on drought tolerance in cool-season grasses
Decunta, Facundo A.; Pérez, Luis; Malinowski, Dariusz P.; Molina-Montenegro, Marco A.; Gundel, Pedro E. (2021)Symptomless fungal endophytes in the genus Epichloë are repeatedly mentioned to increase tolerance of cool-season grasses to a wide range of environmental stress factors, mainly drought. However, the generality of this ...
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A tradeoff between fitness‐related traits mask facilitation in a semiarid ecosystem
Molina-Montenegro, Marco A.; Baldelomar, Mariela; Atala, Cristian; Torres-Díaz, Cristian (2020)In stressful environments, a nurse plant can ameliorate harsh biotic and abiotic conditions for another plant species that grows within its canopy. This canopy can act as a barrier for herbivores, reducing damage to the ...
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Antarctic root endophytes improve physiological performance and yield in crops under salt stress by enhanced energy production and Na+ sequestration
Molina-Montenegro, Marco A.; Acuña-Rodríguez, Ian S.; Torres-Díaz, Cristian; Gundel, Pedro E.; Dreyer, Ingo (2020)Climatic change is pointed as one of the major challenges for global food security. Based on current models of climate change, reduction in precipitations and in turn, increase in the soil salinity will be a sharp constraint ...
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Assessing the importance of native mycorrhizal fungi to improve tree establishment after wildfires
Atala, Cristian; Reyes, Sebastián A.; Molina-Montenegro, Marco A. (2023)The Chilean matorral is a heavily threatened Mediterranean-type ecosystem due to humanrelated activities such as anthropogenic fires. Mycorrhizal fungi may be the key microorganisms to help plants cope with environmental ...
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Differential impact of an eclipse on photosynthetic performance of trees with different degrees of shade tolerance
Molina-Montenegro, Marco A.; Atala, Cristian; Carrasco-Urra, Fernando (2021)Solar eclipses represent a natural and unexpected event for plants that can potentially affect photosynthetic performance at the individual level. This effect, however, has seldom been evaluated. Here, we measured the ...
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Functional roles of microbial symbionts in plant cold tolerance
Acuña-Rodríguez, Ian S.; Newsham, Kevin K.; Gundel, Pedro E.; Torres-Díaz, Cristian; Molina-Montenegro, Marco A. (2020)In this review, we examine the functional roles of microbial symbionts in plant tolerance to cold and freezing stresses. The impacts of symbionts on antioxidant activity, hormonal signaling and host osmotic balance are ...
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Fungal endophytes enhance the photoprotective mechanisms and photochemical efficiency in the Antarctic Colobanthus quitensis (Kunth) Bartl. Exposed to UV-B radiation
Barrera, Andrea; Hereme, Rasme; Ruiz-Lara, Simon; Larrondo, Luis F.; Gundel, Pedro E.; Pollmann, Stephan; Molina-Montenegro, Marco A.; Ramos, Patricio (2020)Antarctic plants have developed mechanisms to deal with one or more adverse factors which allow them to successfully survive such extreme environment. Certain effective mechanisms to face adverse stress factors can arise ...
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Fungal endophytes exert positive effects on Colobanthus quitensis under water stress but neutral under a projected climate change scenario in Antarctic
Hereme, Rasme; Morales-Navarro, Samuel; Ballesteros, Gabriel; Barrera, Andrea; Ramos, Patricio; Gundel, Pedro E.; Molina-Montenegro, Marco A. (2020)Functional symbiosis is considered one of the successful mechanisms by which plants that inhabit extreme environment improve their ability to tolerate different types of stress. One of the most conspicuous type of symbiosis ...
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Fungal symbionts enhance N-uptake for Antarctic plants even in non-N limited soils
Acuña-Rodríguez, Ian S.; Galán, Alexander; Torres-Díaz, Cristian; Atala, Cristian; Molina-Montenegro, Marco A. (2020)Plant-fungi interactions have been identified as fundamental drivers of the plant host performance, particularly in cold environments where organic matter degradation rates are slow, precisely for the capacity of the fungal ...
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Genotoxicity of oxidative stress and UV-B radiation in Antarctic vascular plants
Acuña-Rodríguez, Ian S.; Zúñiga-Venegas, Liliana A.; Molina-Montenegro, Marco A. (2021)For plants, reactive oxygen species (ROS) and ultraviolet B radiation (UV-B) stand out as important genotoxic agents. Hence, the genetic damage among the Antarctic vascular flora, whose individuals frequently experience ...
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Getting ready for the ozone battle: vertically transmitted fungal endophytes have transgenerational positive effects in plants
Ueno, Andrea C.; Gundel, Pedro E.; Molina-Montenegro, Marco A.; Ramos, Patricio; Ghersa, Claudio M.; Martínez-Ghersa, M. Alejandra (2021)Ground-level ozone is a global air pollutant with high toxicity and represents a threat to plants and microorganisms. Although beneficial microorganisms can improve host performance, their role in connecting environmentally ...
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In silico analysis of metatranscriptomic data from the antarctic vascular plant Colobanthus quitensis: responses to a global warming scenario through changes in fungal gene expression levels
Ballesteros, Gabriel I.; Torres-Díaz, Cristian; Bravo, León A.; Balboa, Karen; Caruso, Carla; Bertini, Laura; Proietti, Silvia; Molina-Montenegro, Marco A. (2020)Maritime Antarctica is one of the most stressful environments for plant life worldwide. However, two vascular plant species (Deschampsia antarctica and Colobanthus quitensis) have been able to colonize this hostile ...
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Increasing impacts by Antarctica’s most widespread invasive plant species as result of direct competition with native vascular plants
Molina-Montenegro, Marco A.; Bergstrom, Dana M.; Chwedorzewska, Katarzyna J.; Convey, Peter; Chown, Steven L. (2019)Biological invasions represent significant economic and conservation challenges, though it is widely acknowledged that their impacts are often poorly documented and difficult to predict. In the Antarctic, one non-native ...
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Inoculation with extreme endophytes improves performance and nutritional quality in crop species grown under exoplanetary conditions
Molina-Montenegro, Marco A.; Escobedo, Victor M.; Atala, Cristian (2023)Introduction: Technological advances have made possible long space travels and even exoplanetary colonies in the future. Nevertheless, the success of these activities depends on our ability to produce edible plants in ...
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Integration of physiological and molecular traits would help to improve the insights of drought resistance in highbush blueberry cultivars
Balboa, Karen; Ballesteros, Gabriel I.; Molina-Montenegro, Marco A. (2020)Water deficit or drought is one of the most severe factors limiting plant yield or fruit quality. Thus, water availability for irrigation is decisive for crop success, such as the case of highbush blueberry (Vaccinium ...
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Isolation and characterization of microsatellites for the endangered endemic tree Nothofagus alessandrii (Nothofagaceae)
Torres-Díaz, Cristian; Valladares, Moisés A.; Molina-Montenegro, Marco A.; Mora-Poblete, Freddy (2021)Nothofagus alessandrii (Nothofagaceae) is one of the most endangered trees from Chile due to high rates of habitat disturbance caused by human activities. Despite its conservation status, few molecular markers are available ...
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Maternal exposure to ozone modulates the Endophyte-conferred resistance to Aphids in lolium multiflorum plants
Bubica, Ludmila M.; Ueno, Andrea C.; Di Leo, Tara D.; Crocco, Carlos D.; Martínez-Ghersa, M. Alejandra; Molina-Montenegro, Marco A.; Gundel, Pedro E. (2020)Plants are challenged by biotic and abiotic stress factors and the incidence of one can increase or decrease resistance to another. These relations can also occur transgenerationally. For instance, progeny plants whose ...
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Positive interaction between shrubs and native orchids in a Mediterranean ecosystem
Atala, Cristian; Baldelomar, Mariela; Torres-Díaz, Cristian; Pereira, Guillermo; Cacciuttolo, Felipe; Vargas, Reinaldo; Molina-Montenegro, Marco A. (2020)In the Mediterranean portion of Central Chile, where anthropic disturbances are common and severe, precipitations could drastically decrease and temperatures increase due to climate change. In this ecological context, ...