Typology of sclereids

Rao, T. Ananda; Bhupal, O. P.

doi:10.1007/bf03045552

Cited by 38 publications

(3 citation statements)

References 10 publications

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“…Terminal sclereids have no clear phylogenetic delimitations (Malaviya, 1976; Rao & Bhupal, 1973; Rao & Chin, 1966; Tomlinson, 1959) and originate from parenchyma cells that elongate irregularly into branches invading intercellular spaces and pushing between the walls of neighbouring cells (Evert, 2006; Griffith, 1968). As they are frequently observed in close association with terminal tracheids and veins, terminal sclereids have long been thought to have an extra‐vascular role in water transport (Foster, 1956; Rao & Bhupal, 1973; Rao & Mody, 1961); despite this, their contributions to leaf hydraulics are still being resolved (Heide‐Jorgensen, 1990; Losada et al, 2020). Such extra‐vascular leaf structures have been suggested as adaptations to increase water dispersal from xylem to client cells within the leaf lamina, thereby improving hydraulic efficiency (Brodribb & Holbrook, 2005; Brodribb, 2015; Buckley, John, Scoffoni, & Sack, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…caseolaris , (Figures 3 and 4), parallels recent observations of FWU via peltate hairs overlying columnal idioblasts in Capparis odoratissima (Losada et al, 2020). Terminal sclereids have no clear phylogenetic delimitations (Malaviya, 1976; Rao & Bhupal, 1973; Rao & Chin, 1966; Tomlinson, 1959) and originate from parenchyma cells that elongate irregularly into branches invading intercellular spaces and pushing between the walls of neighbouring cells (Evert, 2006; Griffith, 1968). As they are frequently observed in close association with terminal tracheids and veins, terminal sclereids have long been thought to have an extra‐vascular role in water transport (Foster, 1956; Rao & Bhupal, 1973; Rao & Mody, 1961); despite this, their contributions to leaf hydraulics are still being resolved (Heide‐Jorgensen, 1990; Losada et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

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Foliar water uptake via cork warts in mangroves of the Sonneratia genus

Bryant

Fuenzalida

Zavafer

et al. 2021

Plant Cell & Environment

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Foliar water uptake (FWU) occurs in plants of diverse ecosystems; however, the diversity of pathways and their associated FWU kinetics remain poorly resolved. We characterized a novel FWU pathway in two mangrove species of the Sonneratia genus, S. alba and S. caseolaris. Further, we assessed the influence of leaf wetting duration, wet-dry seasonality and leaf dehydration on leaf conductance to surface water (K surf ). The symplastic tracer dye, disodium fluorescein, revealed living cells subtending and encircling leaf epidermal structures known as cork warts as a pathway of FWU entry into the leaf. Rehydration kinetics experiments revealed a novel mode of FWU, with slow and steady rates of water uptake persistent over a duration of 12 hr. K surf increased with longer durations of leaf wetting and was greater in leaves with more negative water potentials at the initiation of leaf wetting. K surf declined by 68% between wet and dry seasons. Our results suggest that FWU via cork warts in Sonneratia sp. may be rate limited and under active regulation. We conclude that FWU pathways in halophytes may require ion exclusion to avoid uptake of salt when inundated, paralleling the capacity of halophyte roots for ion selectivity during water acquisition.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Foliar water uptake via cork warts in mangroves of the Sonneratia genus

Bryant

Fuenzalida

Zavafer

et al. 2021

Plant Cell & Environment

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“…H is known that sclereids in the form of isolated cells and cell groups are a component part of different plant tissues and organs (Rao & Bhupal, 1973). In the Mesozoic coals of Siberia they are found in the form of isolated fragments both in the heterogeneous matter and in the composition of ginkgophyte-conifer cortex (Drozdova, 1963, fig.…”

Section: Phyterals Of Unestablishedmentioning

confidence: 99%

Phyterals of Jurassic coals of Tuva

Lapo¹

1976

JPS

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Phyterals of the coals of two thick coal seams (vitrinitic for the most part) near the USSR Mongolia border are described here: the "Ulug" of the Ulugkhem basin and the "Chadan" of the Chadan deposit. A three-stage hierarchical classification of the studied phyterals has been worked out. Within this classification we distinguish groups (according to the plant organs), subgroups (on the basis of the plant tissues) and individual phyterals. One can draw a conclusion that the Jurassic coal-forming vegetation in Tuva was rather a shrubby (probably, an undershrub) or an herbaceous one, than an arboreal forest.

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Typology of foliar sclereids in various taxa of Hamamelidaceae

Rao

Bhupal

1974

Proceedings of the Indian Academy of Sciences - Section B

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Typology of sclereids

Cited by 38 publications

References 10 publications

Foliar water uptake via cork warts in mangroves of the Sonneratia genus

Foliar water uptake via cork warts in mangroves of the Sonneratia genus

Phyterals of Jurassic coals of Tuva

Typology of foliar sclereids in various taxa of Hamamelidaceae

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