Results 51 to 60 of about 13,123 (223)

Lacandonia granules are present in the cell nucleus of Welwitschia mirabilis

open access: yesBotan‪ical Sciences, 2018
Background: Lacandonia granules are extranucleolar ribonucleoprotein (RNPs) particles, 32 nanometers in diameter that were first described in the nucleus of Lacandonia schismatica. Cytochemical and immunocytochemical studies suggest that these particles
Lourdes-Teresa Agredano-Moreno   +3 more
doaj   +1 more source

Spatial Patterns of Seed Plants and Their Conservation Priorities in Jiangxi Province, China 中国江西省种子植物的空间格局及其保护优先区

open access: yesIntegrative Conservation, EarlyView.
We comprehensively evaluated the seed plant diversity of Jiangxi province to address the regional biodiversity conservation of Asian subtropical evergreen broad‐leaved forests (EBLFs). Higher species diversity of seed plants was observed in eastern, southern, and western Jiangxi, with elevation and precipitation as mainly environmental factors.
Minqin Duan   +8 more
wiley   +1 more source

Conflicting phylogenetic relationships among extant gymnosperms.

open access: yes, 2013
(A) The four main lineages of extant gymnosperms: (1) conifers (Pinus resinosa), (2) cycads (Cycas sp.), (3) Ginkgo biloba, and (4) gnetophytes (Ephedra chilensis). (B) Two main hypotheses for phylogenetic relationships of gymnosperms.
Zhenxiang Xi (282009)   +2 more
core   +1 more source

The most threatened plants receive the least scientific attention

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Plants sustain all life, providing the energetic and structural basis of ecosystems, but they face a growing risk of extinction. Reversing this decline requires an understanding of how scientific knowledge is distributed among species, and identification of the biases and gaps that hinder effective responses to the threats they face. However, we reveal
Renon S. Andrade   +3 more
wiley   +1 more source

Advances of the Flowering Genes of Gymnosperms [PDF]

open access: yes, 2018
Flowering is an important stage in the life cycle of plants and also a turning point from vegetative growth to reproductive growth. This process is affected by many exogenous and endogenous factors.
MAO, Dun, XU, Feng, YE, Jiabao
core   +1 more source

Within‐tree spatial heterogeneity of sap flow velocities and wood properties and its effect on the uncertainty of tree level sap flux estimates

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
As forests are important for biodiversity and recreation and provide vital resources globally, it is essential that their health can be accurately monitored, for example, by using sap flow probes to measure tree water uptake. We investigated whether sap flow measurements might differ at various locations within the same tree due to variation in wood ...
Stefan Seeger   +2 more
wiley   +1 more source

When alien plants become health hazards: An applied study on toxic and allergenic risks in Italy

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Alien plants are often studied for their ecological harm, but their risks to human and animal health remain poorly documented. This study provides the first comprehensive catalogue of poisonous and allergenic alien plants in Italy, identifying which species are dangerous, where they grow and who is most at risk—from children in city parks to pets and ...
Giulio Barone   +3 more
wiley   +1 more source

Intraspecific variability rivals interspecific differences in root traits of temperate tree seedlings

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Global change and associated disturbances are increasing the risk of regeneration failure for tree species in temperate forests. Seedlings are particularly vulnerable to water stress due to their shallow root systems, making below‐ground plasticity a potentially key ...
Morgane Dendoncker   +11 more
wiley   +1 more source

Stem water content predicts drought‐induced mortality in tropical semiarid species

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Hydraulic Failure is one of the primary mechanisms underlying plant mortality during drought. Hydraulic failure occurs when the plant's xylem, under water stress, crosses a critical percentage of loss of xylem hydraulic conductivity (PLC) threshold, which causes the ...
Lussarina Oliveira Lima   +6 more
wiley   +1 more source

BIOLOGICAL AND ECONOMIC IMPORTANCE OF FOREST GYMNOSPERMS

open access: yes, 2023
The article presents data on the biological and economic features of forest gymnosperms, their chemical composition, medicinal properties, and use in the national ...
Djabborov Bakhtiyor Iskandarovich   +2 more
core  

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