Incidence of In Situ Pollen Germination in Three Species of Viola L. of Uttarakhand

Mann, Neha; Uniyal, Prem L.

doi:10.1007/s40009-020-00917-z

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…Viola canescens Wall ex., Roxb., Himalayan white violet an important and preferred medicinal herb in different folk or ethnomedicinal preparations and use to cure wide spectra of diseases from common cold to life thrating diseases (neurological disorder, renal dis-functioning and cancer) [1][2][3][4][5][6]. Roots of the plants are known to have an alkaloid named violin along with some other important phytochemicals such as methyl silicates, phenols, steroids etc.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles Using Root Extract of Viola canescens Wall. ex. Roxb.

et al. 2019

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Stable zinc oxide nanoparticles were synthesized by using green approach of nanotechnology. The present investigation aimed to synthesize, stable, cost effective, rapid, eco-friendly approach for the bio-reduction of zinc nitrate hexahydarate to their nano size using phytochemicals present in the root extract of Viola canescens. The synthesized nanoparticles were further characterized by UV-visible, XRD, FTIR, SEM techniques and tested against the Gram-negative and Gram-positive pathogenic cultures of bacteria. The average size of synthesized nanoparticles was less than 11 nm with hexagonal morphology. The clear zone of inhibition against tested bacteria showed their capability as antimicrobial agent.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles Using Root Extract of Viola canescens Wall. ex. Roxb.

et al. 2019

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Floral anatomy points to autogamy as a possible evolutionary path in Elatinaceae (Malpighiales)

Bonifácio,

Amorim,

Oliveira

2023

Plant Syst Evol

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“Pollen tube shower” inBertolonia(Melastomataceae): a new delayed selfing mechanism in flowers with poricidal anthers

Passos

Telles

Goldenberg

et al. 2021

Botanical Journal of the Linnean Society

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About one-fifth of angiosperms reproduce predominantly through self-fertilization, mediated by morphological and functional flower traits. Autonomous selfing is rare in Melastomataceae, a megadiverse family with most species featuring poricidal anthers and herkogamy. However, previous studies suggested that some Bertolonia spp. were capable of autonomous selfing. Here, we investigated the existence of autonomous selfing in the group and, considering its specialized floral morphology, the mechanisms involved in this process. We conducted studies on floral biology, pollination experiments and pollinator visitation rates for Bertolonia paranaensis (anthers with introrse pores) and Bertolonia mosenii (anthers with extrorse pores). The transient absence of herkogamy and the dynamics of the movements of the flower parts during post-anthesis events promoted delayed selfing in both species. In post-anthesis flowers, pollen grains germinate inside the anthers, the pollen tubes come out through the anther pores and then reach the stigma, penetrating the transmission tissue, and fertilize the ovules. Both species received visits from buzzing bees and have a mixed mating system, i.e. the capacity of cross-pollination and delayed selfing-pollination. We present the first description of an autonomous selfing mechanism for plants with poricidal anthers, for which we coin the name “pollen tube shower”. Pollen tube shower promotes reproductive assurance to flowers that have not been pollinated and ensures reproductive success of individuals in the absence of pollinators.

show abstract

Incidence of In Situ Pollen Germination in Three Species of Viola L. of Uttarakhand

Cited by 4 publications

References 9 publications

Green Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles Using Root Extract of Viola canescens Wall. ex. Roxb.

Green Synthesis, Characterization and Antimicrobial Activity of Zinc Oxide Nanoparticles Using Root Extract of Viola canescens Wall. ex. Roxb.

Floral anatomy points to autogamy as a possible evolutionary path in Elatinaceae (Malpighiales)

“Pollen tube shower” inBertolonia(Melastomataceae): a new delayed selfing mechanism in flowers with poricidal anthers

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