Exploring silica accumulation in bamboo leaves: A study on phytolith morphology and epidermal patterning in the tropical giant bamboo Dendrocalamus copelandii.
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引用次数: 0
Abstract
Background and aims: Bamboo is a grass in the Poaceae family with various applications. Bamboo leaves can accumulate high silica. However, silica deposition in bamboo has received limited study. Therefore, this research investigated silica accumulation in Dendrocalamus copelandii leaves. The study includes the localisation of silica through phytolith morphology, examination of the distribution patterns of phytoliths in epidermal tissues, analysis of silica accumulation within specialised silica cells (short cells), and analysis of silicon concentration across various leaf developmental stages.
Methods: We employed imaging techniques, including Differential interference contrast and Scanning electron microscope incorporated with an energy-dispersive X-ray spectrometer, to investigate silica accumulation in bamboo leaves. We also analysed silicon concentration using Inductively coupled plasma-optical emission spectroscopy.
Key results: Leaves of D. copelandii exhibited 11 phytolith morphotypes, such as BILOBATE, POLYLOBATE, SADDLE, ACUTE, ACUTE BULBOSUS, MICROHAIR, STOMATA, BULLIFORM FLABELLATE, ELONGATE SINUATE, ELONGATE ENTIRE and TRACHEARY. Most of these phytoliths were found in short cells (BILOBATE, POLYLOBATE and SADDLE) of epidermal tissues. The short cells were arranged transversely along the leaf length. BILOBATE was found in both the abaxial and adaxial epidermis, while SADDLE was found only in the abaxial epidermis. Silica accumulation in the short cells of unexpanded leaves begins at the leaf apex, spreads to the middle and base positions, and accumulates first in the abaxial before the adaxial epidermis. Moreover, bamboo leaves accumulate more silicon concentration as they age.
Conclusions: Phytolith morphotypes and silica accumulation in epidermal short cells are key factors in understanding silica deposition. Leaf age and climate significantly impact silicon concentration in bamboo leaves. Our findings are informative for archaeological studies and for plant taxonomical classification. The results are also applicable for biotechnological applications.
期刊介绍:
Annals of Botany is an international plant science journal publishing novel and rigorous research in all areas of plant science. It is published monthly in both electronic and printed forms with at least two extra issues each year that focus on a particular theme in plant biology. The Journal is managed by the Annals of Botany Company, a not-for-profit educational charity established to promote plant science worldwide.
The Journal publishes original research papers, invited and submitted review articles, ''Research in Context'' expanding on original work, ''Botanical Briefings'' as short overviews of important topics, and ''Viewpoints'' giving opinions. All papers in each issue are summarized briefly in Content Snapshots , there are topical news items in the Plant Cuttings section and Book Reviews . A rigorous review process ensures that readers are exposed to genuine and novel advances across a wide spectrum of botanical knowledge. All papers aim to advance knowledge and make a difference to our understanding of plant science.