Results 31 to 40 of about 31,127 (144)

Evolution of repetitive DNA in angiosperms: examples from Nicotiana allopolyploids [PDF]

open access: yes, 2012
PhDAllopolyploidy, interspecific hybridisation coupled with genome multiplication, is a prevailing force in the evolution of angiosperms. This thesis examines the consequences of allopolyploidy at the genomic level.
Renny-Byfield, Simon
core   +4 more sources

An Endophytic Trichoderma Strain Promotes Growth of Its Hosts and Defends Against Pathogen Attack

open access: yesFrontiers in Plant Science, 2020
Plants host numerous endophytic microbes which promote plant performance, in particular under stress. A new endophytic fungus was isolated from the leaves of a deciduous wood tree Leucas aspera.
Yu-Heng Tseng   +10 more
doaj   +1 more source

Native bacterial endophytes promote host growth in a species-specific manner; phytohormone manipulations do not result in common growth responses. [PDF]

open access: yesPLoS ONE, 2008
BackgroundAll plants in nature harbor a diverse community of endophytic bacteria which can positively affect host plant growth. Changes in plant growth frequently reflect alterations in phytohormone homoeostasis by plant-growth-promoting (PGP ...
Hoang Hoa Long   +2 more
doaj   +1 more source

The effect of polyploidy and hybridization on the evolution of floral colour in Nicotiana (Solanaceae). [PDF]

open access: yes, 2015
Speciation in angiosperms can be accompanied by changes in floral colour that may influence pollinator preference and reproductive isolation. This study investigates whether changes in floral colour can accompany polyploid and homoploid hybridization ...
Taylor, L   +52 more
core   +1 more source

CELL CYCLE KINETICS AND DEVELOPMENT OF HYDRA ATTENUATA [PDF]

open access: yes, 1974
The differentiation of nerve cells and nematocytes in Hydra attenuata has been investigated by labelling interstitial cell precursors with PHJthymidine and following by autoradiography the appearance of labelled, newly differentiated cells.
Gierer, A., David, Charles N.
core   +4 more sources

Biosynthesis, regulation and herbivore defense function of triterpenes from Nicotiana attenuata

open access: yes, 2023
In this study, the biosynthesis, regulation, and defense function of triterpenes in a wild tobacco plant Nicotiana attenuata were elucidated. We discovered that two oxidosqualene cyclases, NaOSC1 and NaOSC2, are involved in the synthesis of the ...
Caiqiong Yang (14338944)
core   +1 more source

Determination of Nectar Nicotine Concentration in N. attenuata

open access: yesBio-Protocol, 2013
In this protocol, the determination of the nicotine concentration in nectar of Nicotiana attenuata is described. This method is applicable for the investigation of small amounts of nectar (above 1 μl).
Eva Rothe   +3 more
doaj   +1 more source

California TRV-based VIGS vectors mediate gene silencing at elevated temperatures but with greater growth stunting

open access: yesBMC Plant Biology, 2021
Background Tobacco rattle virus (TRV) based virus-induced gene silencing (VIGS), a widely used functional genomics tool, requires growth temperatures typically lower than those of the plant’s native environment.
Jamilur Rahman   +2 more
doaj   +1 more source

Phylotranscriptomics supports numerous polyploidization events and phylogenetic relationships in Nicotiana

open access: yesFrontiers in Plant Science, 2023
IntroductionNicotiana L. (Solanaceae) is of great scientific and economic importance, and polyploidization has been pivotal in shaping this genus. Despite many previous studies on the Nicotiana phylogenetic relationship and hybridization, evidence from ...
Shuaibin Wang   +5 more
doaj   +1 more source

PR-13/Thionin But Not PR-1 Mediates Bacterial Resistance in Nicotiana attenuata in Nature, and Neither Influences Herbivore Resistance

open access: yesMolecular Plant-Microbe Interactions, 2008
Increases in pathogenesis-related (PR) transcripts are commonly interpreted as evidence of plants' resistance responses to pathogens; however, few studies have examined whether increases in PR proteins protect plants growing under natural conditions ...
Cbgowda Rayapuram   +3 more
doaj   +1 more source

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