Roles of trichomes with silica particles on the surface of leaves in <i>Aphananthe aspera</i>

Takeda, Hiroyuki; Ito, Fuyu; Yamanaka, Shigeru; Takiyama, Naoyuki; Yoshino, Katsumi

doi:10.1063/1.4794958

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…According to Takeda et al . (), silicified trichomes could efficiently help plants to absorb visible light. Waterkeyn et al .…”

Section: Introductionmentioning

confidence: 99%

“…However, other studies showed that the silicified bulliform cells are favored when transpiration is high (Takeoka et al, 1984) or simply when the Si content in soils is high (Fernandez Honaine & Osterrieth, 2012). According to Takeda et al (2013), silicified trichomes could efficiently help plants to absorb visible light. Waterkeyn et al (1982) suggested that silicified trichomes are areas of intense transpiration and may thus contribute to cooling plants; however, this remains speculative (Hodson et al, 1985;Kaufman et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

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Effect of phytoliths for mitigating water stress in durum wheat

et al. 2017

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The role of silicon (Si) in alleviating biotic and abiotic stresses in crops is well evidenced by empirical studies; however, the mechanisms by which it works are still poorly known. The aim of this study is to determine whether or not phytolith composition and distribution in wheat are affected by drought and, if so, why. Durum wheat was grown using hydroponics in the presence of polyethylene glycol (PEG)-6000 to perform a water-stress simulation. We developed an original method for in situ analysis of phytoliths in leaves via X-ray imaging. PEG was efficient in inhibiting water uptake by roots and creating stress, and prevented a small fraction of Si from being accumulated in the shoots. The application of Si with PEG maintained shoot and root fresh weights (FW) and relative water content at higher values than for plants without Si, especially at PEG 12%. Our data show that, under water stress in the presence of Si, accumulation of phytoliths over the veins provides better support to the leaf, thus allowing for a better development of the whole plant than in the absence of Si. The development of silicified trichomes in durum wheat depends primarily on the availability of Si in soil and is not an adaptation to water stress.

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“…According to Takeda et al . (), silicified trichomes could efficiently help plants to absorb visible light. Waterkeyn et al .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of phytoliths for mitigating water stress in durum wheat

et al. 2017

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“…The increased silicification in acute bulbosus in relation to Si availability is in agreement to Meunier et al (2017), who also did not find a relation with water stress and consider that these cells may act as a reservoir of excess Si. Instead, Takeda et al (2013) associated the presence of silica in trichomes with an improvement of photosynthesis, due to a higher absorption of far-infrared light. Lastly, a higher accumulation of silica resulting in multicellular deposits (silica skeletons) may favor the erectness of leaves, also promoting photosynthesis (De Tombeur et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Silicon fertilization increases gas-exchange and biomass by silicophytolith deposition in the leaves of contrasting drought-tolerant sugarcane cultivars under well-watered conditions

et al. 2021

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were evaluated in the top visible dewlap leaves. Stalk length and stalk biomass were also evaluated. ResultsThe silicophytolith, Si contents, net CO 2 assimilation rate (A), plant transpiration (E), stomatal conductance (gs) and electron transport rate (ETR) of leaves and fresh biomass and length of stalks increased linearly as functions of the Si application rate, independent of cultivar. RB86-7515 showed the highest stalk length, fresh stalk and green leaf biomass, relative water content, and water potential, while RB85-5536 showed superior values for A, E, gs, and ETR. Conclusions Si fertilization improved photosynthesis, transpiration, stalk length, and stalk biomass production in sugarcane. The highest silicophytolith content was reflected in a diversity of silicified cells, which may favor a higher photosynthesis and biomass. The increase of silicification in stomata AbstractPurpose Silicon (Si) fertilization provides benefits to sugarcane. However, information remain scarce about the relationship between Si fertilization, gas exchange responses, biomass and silicophytolith accumulation in contrasting drought tolerant sugarcane cultivars under well-watered conditions Methods Sugarcane cultivars (drought-tolerant and drought-sensitive) were grown in pots containing soil with low available Si and were treated (at rates equivalent to 0, 250, 500, 750, and 1000 kg ha −1 Si) with Si as silicate. The silicophytolith contents, morphotype descriptions, Si concentrations and gas exchange Responsible Editor: Miroslav Nikolic.

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“…Trichomes with silica particles were found on the leaves of Aphananthe aspera , which appeared to help incident far-infrared light to propagate efficiently inside the trichomes and leaves. It is believed that this, in turn, helped to heat the plant 12 .…”

Section: Introductionmentioning

confidence: 99%

Strategy of optical path of daylight signal into tissues in cold-season turfgrasses using small, concave silica bodies

Yamanaka

Usami

Kakegawa

et al. 2018

Sci Rep

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Plants incorporate inorganic materials (biominerals), such as silica, into their various components. Plants belonging to the order Poales, like rice plants and turfgrasses, show comparatively high rates of silicon accumulation, mainly in the form of silica bodies. This work aims to determine the shapes and roles of these silica bodies by microscopic observation and optical simulation. We have previously found convex silica bodies on the leaves of rice plants and hot-season turfgrasses (adapted to hot-seasons). These silica bodies enabled light reflection and ensured reduction of the photonic density of states, which presumably prevented the leaves from overheating, as suggested by theoretical optical analyses. The silica bodies have been considered to have the functions of reinforcement of the plant body. The present work deals with cold-season turfgrasses, which were found to have markedly different silica bodies, cuboids with a concave top surface. They presumably acted as small windows for introducing light into the tissues, including the vascular bundles in the leaves. The area of the silica bodies was calculated to be about 5% of the total surface area of epidermis, which limits the thermal radiation of the silica bodies. We found that the light signal introduced through the silica bodies diffused in the organs even reaching the vascular bundles, the physiological functions of this phenomena remain as future problems. Light signal in this case is not related with energy which heat the plant but sensing outer circumstances to respond to them.

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Roles of trichomes with silica particles on the surface of leaves in Aphananthe aspera

Cited by 7 publications

References 15 publications

Effect of phytoliths for mitigating water stress in durum wheat

Effect of phytoliths for mitigating water stress in durum wheat

Silicon fertilization increases gas-exchange and biomass by silicophytolith deposition in the leaves of contrasting drought-tolerant sugarcane cultivars under well-watered conditions

Strategy of optical path of daylight signal into tissues in cold-season turfgrasses using small, concave silica bodies

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