Research advances in plant root geotropism
2023年3月30日 · Mancuso et al. found that the root of maize seedlings remains somewhat gravitropic after excision of the root crown, a response that could be enhanced by manipulating myosin activity or by disrupting actin filaments.
This evidence suggests that starch is important to the perception of gravity through the primitive root. The columnar cells in the root crown, with their dense starch granules, are the locus of the response of the vascular plant root to gravity (Morita 2010).
Primary Root and Mesocotyl Elongation in Maize Seedlings: …
2021年6月23日 · As the emerging maize seedling perceives light, there is a decrease in mesocotyl elongation, an induction of root growth, and an expansion of leaves, along with numerous profound changes that allow the initiation of the photoautotrophic phase of the plant [22,94,95,96,97,98].
(PDF) Impact of the orientation of seed placement and depth of its ...
2023年3月19日 · Planting seeds in a downward position can lead to a variety of physiological, chemical and morphological changes in seedlings. Consequences are usually manifested as noticeable modifications in...
Phototropism and geotropism in maize coleoptiles are spatially ... - Nature
1990年6月7日 · The positive phototropism 2 and the negative geotropism of grass seedling coleoptiles are believed to result from lateral movement of auxin from the irradiated to the shaded side 3–5 and from...
Phototropism and geotropism in maize coleoptiles are spatially ... - PubMed
1990年6月7日 · The positive phototropism and the negative geotropism of grass seedling coleoptiles are believed to result from lateral movement of auxin from the irradiated to the shaded side and from the upper to the lower side, respectively.
Phototropism and geotropism in maize coleoptiles are spatially ...
1990年6月7日 · Using a scanning laser confocal microscope, a new visible wavelength Ca2+ probe fluo-3 and the fluorescent pH indicator BCECF, we have recorded rapid light-induced increases in [Ca2+]cyt and a lowering of pHcyt of cells on the shaded side of maize coleoptiles.
Genome-wide dissection of changes in maize root system
2022年11月17日 · The root-related changes in maize domestication, improvement and modern breeding were systematically investigated, and candidate genes related to maize root system architecture were identified...
Shen-Miller (7) reported that in the maize variety Wisconsin hybrid 64A x 22 R, B light was effective in inducing root gravitropism and that the promotive effects of B could be re-
Graviperception in maize plants: is amyloplast sedimentation a …
2018年6月11日 · The results indicate that the model of graviperception based on amyloplast sedimentation does not apply to maize seedlings. Land plants perceive gravity and respond to it in an organ-specific way; shoots typically direct growth upwards, roots typically downwards.