Browsing by Author "Mujica, Maria Isabel"

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    FungalTraits: a user-friendly traits database of fungi and fungus-like stramenopiles
    (2020) Polme, Sergei; Abarenkov, Kessy; Henrik Nilsson, R.; Lindahl, Bjorn D.; Clemmensen, Karina Engelbrecht; Kauserud, Havard; Nguyen, Nhu; Kjoller, Rasmus; Bates, Scott T.; Baldrian, Petr; Froslev, Tobias Guldberg; Adojaan, Kristjan; Vizzini, Alfredo; Suija, Ave; Pfister, Donald; Baral, Hans-Otto; Jarv, Helle; Madrid, Hugo; Norden, Jenni; Liu, Jian-Kui; Pawlowska, Julia; Poldmaa, Kadri; Partel, Kadri; Runnel, Kadri; Hansen, Karen; Larsson, Karl-Henrik; Hyde, Kevin David; Sandoval-Denis, Marcelo; Smith, Matthew E.; Toome-Heller, Merje; Wijayawardene, Nalin N.; Menolli, Nelson, Jr.; Reynolds, Nicole K.; Drenkhan, Rein; Maharachchikumbura, Sajeewa S. N.; Gibertoni, Tatiana B.; Laessoe, Thomas; Davis, William; Tokarev, Yuri; Corrales, Adriana; Soares, Adriene Mayra; Agan, Ahto; Machado, Alexandre Reis; Arguelles-Moyao, Andres; Detheridge, Andrew; de Meiras-Ottoni, Angelina; Verbeken, Annemieke; Dutta, Arun Kumar; Cui, Bao-Kai; Pradeep, C. K.; Marin, Cesar; Stanton, Daniel; Gohar, Daniyal; Wanasinghe, Dhanushka N.; Otsing, Eveli; Aslani, Farzad; Griffith, Gareth W.; Lumbsch, Thorsten H.; Grossart, Hans-Peter; Masigol, Hossein; Timling, Ina; Hiiesalu, Inga; Oja, Jane; Kupagme, John Y.; Geml, Jozsef; Alvarez-Manjarrez, Julieta; Ilves, Kai; Loit, Kaire; Adamson, Kalev; Nara, Kazuhide; Kungas, Kati; Rojas-Jimenez, Keilor; Bitenieks, Kriss; Irinyi, Laszlo; Nagy, Laszlo Laszlo; Soonvald, Liina; Zhou, Li-Wei; Wagner, Lysett; Aime, M. Catherine; opik, Maarja; Mujica, Maria Isabel; Metsoja, Martin; Ryberg, Martin; Vasar, Martti; Murata, Masao; Nelsen, Matthew P.; Cleary, Michelle; Samarakoon, Milan C.; Doilom, Mingkwan; Bahram, Mohammad; Hagh-Doust, Niloufar; Dulya, Olesya; Johnston, Peter; Kohout, Petr; Chen, Qian; Tian, Qing; Nandi, Rajasree; Amiri, Rasekh; Perera, Rekhani Hansika; dos Santos Chikowski, Renata; Mendes-Alvarenga, Renato L.; Garibay-Orijel, Roberto; Gielen, Robin; Phookamsak, Rungtiwa; Jayawardena, Ruvishika S.; Rahimlou, Saleh; Karunarathna, Samantha C.; Tibpromma, Saowaluck; Brown, Shawn P.; Sepp, Siim-Kaarel; Mundra, Sunil; Luo, Zhu-Hua; Bose, Tanay; Vahter, Tanel; Netherway, Tarquin; Yang, Teng; May, Tom; Varga, Torda; Li, Wei; Coimbra, Victor Rafael Matos; de Oliveira, Virton Rodrigo Targino; de Lima, Vitor Xavier; Mikryukov, Vladimir S.; Lu, Yongzhong; Matsuda, Yosuke; Miyamoto, Yumiko; Koljalg, Urmas; Tedersoo, Leho
    The cryptic lifestyle of most fungi necessitates molecular identification of the guild in environmental studies. Over the past decades, rapid development and affordability of molecular tools have tremendously improved insights of the fungal diversity in all ecosystems and habitats. Yet, in spite of the progress of molecular methods, knowledge about functional properties of the fungal taxa is vague and interpretation of environmental studies in an ecologically meaningful manner remains challenging. In order to facilitate functional assignments and ecological interpretation of environmental studies we introduce a user friendly traits and character database FungalTraits operating at genus and species hypothesis levels. Combining the information from previous efforts such as FUNGuild and Fun(Fun) together with involvement of expert knowledge, we reannotated 10,210 and 151 fungal and Stramenopila genera, respectively. This resulted in a stand-alone spreadsheet dataset covering 17 lifestyle related traits of fungal and Stramenopila genera, designed for rapid functional assignments of environmental studies. In order to assign the trait states to fungal species hypotheses, the scientific community of experts manually categorised and assigned available trait information to 697,413 fungal ITS sequences. On the basis of those sequences we were able to summarise trait and host information into 92,623 fungal species hypotheses at 1% dissimilarity threshold.
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    The Physiological Effect of a Holoparasite Over a Cactus Along an Environmental Gradient
    (2021) Ossa, Carmen Gloria; Aros-Mualin, Daniela; Mujica, Maria Isabel; Perez, Fernanda
    Echinopsis chiloensis is an endemic cactus from Chile, distributed in a temperature and rainfall gradient between 30 degrees and 35 degrees South latitude, with mean temperatures increasing and precipitation decreasing toward the north. It is the main host of the mistletoe Tristerix aphyllus, a holoparasite completely dependent on the cactus for water, carbon, and minerals. In this study, we investigated the consequences of parasitism over the fitness and physiology of this cactus throughout its distribution range and how it is affected by the environment. We measured five functional traits in eight populations latitudinally distributed, the first three only for the host: reproductive fitness, stomatal traits (density and size), and photosynthesis (during winter and summer); and the last two for the host and parasite: stable isotopes ( partial differential C-13 and partial differential N-15), and nutrients (carbon and nitrogen content). The results showed a negative effect of parasitism over fitness of infected cacti. However, the higher nitrogen concentrations in cactus tissues toward the south improved overall fitness. Regarding photosynthesis, we only observed a negative effect of parasitism during the dry season (summer), which is also negatively affected by the increase in summer temperatures and decrease in winter rainfall toward the north. There were no differences in nutrient concentration or in the isotopic signature of healthy and infected cacti. Conversely, we observed a higher carbon and lower nitrogen concentration in mistletoes than in cacti regardless of latitude. The loss of temperature seasonality toward the north increases the C:N ratio, and the values between the parasite and its host diverge. partial differential N-15 was similar between parasites and hosts while partial differential C-13 of the parasite was enriched when compared to its host. Overall, the infection by T. aphyllus affects Echinopsis chiloensis fitness but showed no strong effects over the cactus physiology, except for the summer photosynthesis. Therefore, our data revealed that E. chiloensis response to T. aphyllus infection is sensitive to environmental changes in a way that could be strongly impacted by the desertification projected for this area due to climate change.