Abstract
Forty-nine taxa of Sansevieria were examined to provide the first detailed description of leaf anatomy in the genus, as well as to determine the cellular organization of the water-storage tissue present in the central mesophyll of all leaves. Leaf form ranges from flat through cylindrical, with varying degrees of xeromorphic characteristics, including cuticle thickness, stomatal depth, fiber content, and fiber cell development. Mesophyll in all species is divided into an outer region of chlorenchyma and a central region of colorless water-storage tissue. The water-storage tissue comprises a highly branched 3-dimensional network of living cells, among which are many dead, thin-walled water-storage cells. Species with more extreme xeromorphic characteristics tend to have a greater percentage of their water-storage tissue composed of water-storage cells. In 28 taxa, water-storage cells have spiral or reticulate wall bands. These taxa tend to be more xeromorphic. The wall bands may serve an important structural role in drought tolerance.
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Claims 7
Claim · model-written summary
Sansevieria leaf form ranges from flat to cylindrical with variable xeromorphic traits.
DracaenaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf form ranges from flat through cylindrical, with varying degrees of xeromorphic characteristics, including cuticle thickness, stomatal depth, fiber content, and fiber cell development.”
t0“SANSEVIERIA”
Claim · model-written summary
The mesophyll of all examined species has outer chlorenchyma and central water-storage tissue.
- Organ / stage
- Mesophylle0
- Outcome
- outer region of chlorenchyma and a central region of colorless water-storage tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mesophyll in all species is divided into an outer region of chlorenchyma and a central region of colorless water-storage tissue.”
t0“SANSEVIERIA”
Claim · model-written summary
Water-storage tissue consists of a branched network of living cells with many dead thin-walled cells.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The water-storage tissue comprises a highly branched 3-dimensional network of living cells, among which are many dead, thin-walled water-storage cells.”
t0“SANSEVIERIA”
Claim · model-written summary
More xeromorphic species tend to have a greater proportion of water-storage cells.
- Organ / stage
- water-storage tissuee0
- Outcome
- percentage of their water-storage tissue composed of water-storage cellse0
- Direction
- greatere0
- Qualifier
- more extreme xeromorphic characteristicse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Species with more extreme xeromorphic characteristics tend to have a greater percentage of their water-storage tissue composed of water-storage cells.”
t0“SANSEVIERIA”
Claim · model-written summary
Water-storage cells in 28 taxa have spiral or reticulate wall bands.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 28 taxa, water-storage cells have spiral or reticulate wall bands.”
t0“SANSEVIERIA”
Claim · model-written summary
Taxa with wall bands tend to be more xeromorphic.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These taxa tend to be more xeromorphic.”
e1“water-storage cells have spiral or reticulate wall bands”
t0“SANSEVIERIA”
Claim · model-written summary
The authors suggest wall bands may contribute structurally to drought tolerance.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The wall bands may serve an important structural role in drought tolerance.”
t0“SANSEVIERIA”