Results 21 to 30 of about 32,854 (201)
Climate adaptation and functional constraints drive pollen evolution in Apiales
Summary Pollen grains exhibit remarkable morphological diversity, shaped by selective pressures from environmental factors and mechanical constraints. Here, we investigate macroevolutionary patterns of pollen morphology in Apiales, an order of angiosperms with significant ecological and geographical diversity, to disentangle the roles of climate and ...
Jakub Baczyński +3 more
wiley +1 more source
Introducción y objetivos: Las Sierras Pampeanas Centrales de Argentina constituyen el cuarto centro de diversidad de licofitas y helechos del Cono Sur, donde habitan representantes de cuatro familias de Licofitas: Huperziaceae, Lycopodiaceae, Isoetaceae
C. Cecilia Macluf +3 more
doaj +1 more source
Nueva información palinológica sobre la Formación Poti (Viseano superior) en el arroyo Roncador, Cuenca Parnaíba, noreste de Brasil [PDF]
Se presenta el resultado del análisis palinológico de seis muestras de superficie de la Formación Poti expuesta en el arroyo Roncador (Jerumenha, Piauí), noreste de Brasil.
Di Pasquo Lartigue, Maria, Iannuzzi, R.
core +1 more source
Evolution of molecular communication in the permanent Azolla symbiosis
Summary Heritable symbioses exist across eukaryotes with different degrees of intimacy. In most cases, the symbionts are obligate and require inheritance for their survival. On the host side, symbiont retention can facilitate fitness benefits. Only rarely are these symbioses interwoven to the point that host survival relies on the symbiont.
Deren Büyüktaş +2 more
wiley +1 more source
Esporas triletes verrucosas de la Formación Lagarcito (Albiano?) Sierra de Guayaguas, Provincia de San Juan, Argentina. Análisis bioestratigráfico [PDF]
Verrucate trilete spores from the Lagarcito Formation (Albian?) Sierra de Guayaguas, San Juan Province, Argentina. Biostratigraphic analysis. A detailed study of the systematics of thirteen species of verrucate trilete spores recovered from the Lagarcito
Mego, Natalia +1 more
core +1 more source
Loss of E3 ligase HvST1 function substantially increases distal crossover frequency
Summary This study characterizes the function of a grass‐specific E3 ubiquitin ligase, HvST1, in regulating synapsis and crossover (CO) formation during meiosis in barley (Hordeum vulgare). In large‐genome cereals, COs are predominantly restricted to distal chromosomal regions, limiting genetic recombination and breeding flexibility.
Jamie Neil Orr +8 more
wiley +1 more source
Se estudiaron la morfología de las esporas y el desarrollo de los gametofitos de Thelypteris abbiattii y Thelypteris hispidula de material proveniente de la Reserva Natural Punta Lara (Buenos Aires, Argentina).
Juan Pablo Ramos Giocosa +3 more
doaj +1 more source
Fase gametofítica de tres taxones de Anemia (Anemiaceae)
Antecedentes y Objetivos: Anemiaceae presenta un único género, Anemia, con 115 especies que se distribuyen en el Neotrópico, África, India e islas en el Océano Índico.
Cristina Janet Chambi +1 more
doaj +1 more source
Relación de los hongos formadores de micorrizas respecto de las variables fisicoquímicas de suelos de Mendoza cultivados con tomate para industria [PDF]
Las políticas agrícolas a nivel mundial están tendiendo hacia sistemas agrícolas sostenibles destinados a la producción de cultivos con un mantenimiento del óptimo equilibrio físico, químico y biológico en el suelo.
Carosio, María Emilia
core
Summary Mycorrhizal associations between fungi and plants are a fundamental aspect of terrestrial ecosystems. Mycorrhizas occur in c. 85% of extant plants, yet their geological record remains sparse. Rare fossil evidence from early terrestrial environments offers crucial insights into these ancient symbioses, but visualizing fossil fungi at the ...
Christine Strullu‐Derrien +7 more
wiley +1 more source

