Role of fire and fire cues in seed germination, seedling vigor, and establishment of species from fire-prone vegetation and its potential in African underutilized leafy vegetables and edible weeds

Fajinmi, Olufunke O.; Olarewaju, Olaoluwa Omoniyi; Staden, J. Van

doi:10.1016/b978-0-12-823048-0.00002-2

Cited by 1 publication

(1 citation statement)

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“…Seed dormancy is a physiological phenomenon during seed development that impacts the timing of germination and seedling emergence, and contributes to persistence the survival of seeds in the environment once they have reached maturity ( Long et al., 2015 ). Species with delayed and slow germination levels and rates can have advantages unpredictable ecosystems, like those fire- or flood-prone, among other) ( Sales et al., 2013 ; Qasem, 2019 ; Fajinmi et al., 2021 ). However, in species recovery and seedling recruitment in agriculture and forestry, as well as landscape development or habitat restoration, slow germination and low germination rates due to seed dormancy are not a good thing.…”

Section: Introductionmentioning

confidence: 99%

The metagenomics of soil bacteria and fungi and the release of mechanical dormancy in hard seeds

Sun

Pritchard

et al. 2023

Front. Plant Sci.

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Persistence in the soil is a function of seed physiology, particularly non-germination and inherent lifespan. However, for seeds with mechanical dormancy, non-germination is also a function of the composition and activity of the soil microbiota. We attempted to screen out microorganisms in the soil that can specifically and rapidly decompose the hard fruit pericarps of Tilia miqueliana Maxim., a unique native tree species in China. Using the classical replica plating method, more than 100 different culturable microorganisms that could rapidly erode the pericarp were collected from the surface of pericarps under different culture conditions. At the same time, we successfully extended the concept of metagenomics and applied it to the identification of mixed artificial cultures. The decomposition process of the pericarps in soil was also simulated artificially. The physical and chemical data suggested a potential mechanism of microbial scarification and cracking in pericarp, whilst the embryos inside the eroded fruits retained good viability. Our discoveries could pave the way for the removal of physical and mechanical obstacles that prevent hard coat seeds from germinating. We anticipate that the use of this technology will improve the germination of other hard coat seeds. More research is needed to investigate the impacts on other seeds. The findings of this research can inform the design of experiments on the seed ecology of persistence.

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