Results 11 to 20 of about 911 (160)
Phylometagenomics of cycad coralloid roots reveals shared symbiotic signals [PDF]
Microbial GenomicsCycads are known to host symbiotic cyanobacteria, including Nostocales species, as well as other sympatric bacterial taxa within their specialized coralloid roots. Yet, it is unknown if these bacteria share a phylogenetic origin and/or common genomic functions that allow them to engage in facultative symbiosis with cycad roots.
Edder D. Bustos-Diaz +2 more
exaly +6 more sources
Habitat Disturbance Promotes Shifts in the Abundance of Major Fungal Phyla in the Roots of a Native Orchid, <i>Tipularia discolor</i>. [PDF]
Plant Environ InteractABSTRACT Orchids are a widely distributed group of flowering plants with important roles in ecosystems around the globe. However, many species are in decline due, in part, to human‐driven changes in their habitat. It is well established that orchids are reliant on specific groups of mycorrhizal fungi for growth and reproduction and that these fungi can
Watkinson JI.
europepmc +2 more sources
Chemical ecology of symbioses in cycads, an ancient plant lineage. [PDF]
New PhytolSummary Cycads are an ancient lineage of gymnosperms that maintain a plethora of symbiotic associations from across the tree of life. They have myriad morphological, structural, physiological, chemical, and behavioral adaptations that position them as a unique system to study the evolution, ecology, and mechanism of symbiosis.
Salzman S +6 more
europepmc +2 more sources
Subterranean morphology underpins the degree of mycoheterotrophy, mycorrhizal associations, and plant vigor in a green orchid Oreorchis patens. [PDF]
Plant JSignificance Statement The evolution of full heterotrophy from photosynthetic ancestors is a longstanding question in evolutionary ecology. Our study demonstrates that coralloid rhizomes in a photosynthetic orchid promote greater mycoheterotrophic carbon acquisition, leading to more vigorous flowering scapes and increased flower production.
Suetsugu K, Okada H.
europepmc +2 more sources
Developmental anatomy of coralloid roots in cycads / [PDF]
American Journal of Botany, 1974 Coralloid roots of cycads were found to originate endogenously from the pericycle of apogeotropic secondary roots or adventitious roots that have become exposed or nearly exposed to the soil surface. All mature coralloid roots are susceptible to infection by algal endophytes, which seem to enter from the soil through a break in the dermal layers.In the
Milindasuta, Boon-earn,
core +2 more sources
Evolution of molecular communication in the permanent Azolla symbiosis. [PDF]
New PhytolSummary 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.
Büyüktaş D, Lorberg ES, de Vries S.
europepmc +2 more sources
Cycad Coralloid Roots Contain Bacterial Communities Including Cyanobacteria and Caulobacter spp. That Encode Niche-Specific Biosynthetic Gene Clusters. [PDF]
Genome Biol Evol, 2019 AbstractCycads are the only early seed plants that have evolved a specialized root to host endophytic bacteria that fix nitrogen. To provide evolutionary and functional insights into this million-year old symbiosis, we investigate endophytic bacterial sub-communities isolated from coralloid roots of species fromDioon(Zamiaceae) sampled from their ...
Gutiérrez-García K +8 more
europepmc +4 more sources
Cyanobiont diversity within coralloid roots of selected cycad species [PDF]
FEMS Microbiology Ecology, 1999 The diversity and host specificity of the cyanobionts of several cycad species (Cycas circinalis L., C. rumphii Miq., Encephalartos lebomboensis I. Verd., E. villosus Lem., and Zamia pumila L.) collected in a botanical garden were examined using the tRNALeu(UAA) intron sequence as a genetic marker.
José-LuıÌs Costa +2 more
openaire +2 more sources
Diversity, 2023 Heterocyte-forming cyanobacteria form symbiotic relationships with several lineages of plants. Here, twenty (20) strains of endosymbiotic cyanobacteria (cyanobionts) with Nostoc-like morphologies were isolated from the highly specialized coralloid roots ...
Melissa H. Pecundo +6 more
doaj +1 more source
Ukrainian Botanical Journal, 2021 In the course of the present study, surveys on occurrence and distribution of ectomycorrhizal (EcM) fungi in tropical sal forests of foothills of the Himalayas, India, were undertaken. The species of two genera of agarics, namely Asproinocybe and Inocybe,
Kumar J., Atri N.S.
doaj +1 more source