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WITHIN-POPULATION GENETIC DIVERSITY OF CLIMBING PLANTS AND TREES IN A TEMPERATE FOREST IN CENTRAL CHILE

The climbing habit is a key innovation in angiosperm evolution: climbing plant taxa have greater species richness than their non-climbing sister groups. It is considered that highly diversified clades should show increased among-population genetic differentiation. Less clear is the expected pattern regarding within-population genetic diversity in speciose lineages. We tested the...

El cariotipo de Chaetanthera renifolia (J. Remy) Cabrera (Asteraceae)

renifolia (J. Remy) Cabrera (Asteraceae)   Carlos M. Baeza, Eduardo Ruiz & Cristian Torres-Díaz Departamento de Botánica, Universidad de Concepción, Casilla 160-C, Concepción-Chile. ABSTRACT The ... . AGRADECIMIENTOS Se agradece el apoyo de Fondecyt N° 1070520 y al Departamento de Botánica de la Universidad de Concepción por las facilidades otorgadas para realizar esta investigación. Cristian Torres-Díaz

Biological Interactions and Simulated Climate Change Modulates the Ecophysiological Performance of Colobanthus quitensis in the Antarctic Ecosystem

Most climate and environmental change models predict significant increases in temperature and precipitation by the end of the 21st Century, for which the current functional output of certain symbioses may also be altered. In this context we address the following questions: 1) How the expected changes in abiotic factors (temperature, and water) differentially affect the...

Root-endophytes improve the ecophysiological performance and production of an agricultural species under drought condition

Throughout many regions of the world, climate change has limited the availability of water for irrigating crops. Indeed, current models of climate change predict that arid and semi-arid zones will be places where precipitation will drastically decrease. In this context, plant root-associated fungi appear as a new strategy to improve ecophysiological performance and yield of crops...

Is Physiological Performance a Good Predictor for Fitness? Insights from an Invasive Plant Species

Is physiological performance a suitable proxy of fitness in plants? Although, several studies have been conducted to measure some fitness-related traits and physiological performance, direct assessments are seldom found in the literature. Here, we assessed the physiology-fitness relationship using second-generation individuals of the invasive plant species Taraxacum officinale...

Extremely Long-Lived Stigmas Allow Extended Cross-Pollination Opportunities in a High Andean Plant

High-elevation ecosystems are traditionally viewed as environments in which predominantly autogamous breeding systems should be selected because of the limited pollinator availability. Chaetanthera renifolia (Asteraceae) is an endemic monocarpic triennial herb restricted to a narrow altitudinal range within the high Andes of central Chile (3300–3500 m a.s.l.), just below the...