Paraveinal mesophyll: Review and survey of the subtribeErythrininae (Phaseoleae, Papilionoideae, Leguminosae)

1995 ◽  
Vol 196 (1-2) ◽  
pp. 31-62 ◽  
Author(s):  
Curt L. Brubaker ◽  
Nels R. Lersten
Keyword(s):  
Paraveinal Mesophyll

The functional status of paraveinal mesophyll vacuoles changes in response to altered metabolic conditions in soybean leaves

2005 ◽  
Vol 32 (4) ◽  
pp. 335 ◽  
Author(s):  
Kimberly A. Murphy ◽  
Rachel A. Kuhle ◽  
Andreas M. Fischer ◽  
Aldwin M. Anterola ◽  
Howard D. Grimes
Keyword(s):  
Functional Status ◽  
Storage Proteins ◽  
Vegetative Storage Proteins ◽  
Paraveinal Mesophyll ◽  
Lytic Function ◽  
Metabolic Conditions ◽  
Glycine Max L ◽  
Soybean Leaves ◽  
And Storage ◽  
Lytic Compartment

Antibodies raised against tonoplast intrinsic proteins (TIPs) were used to probe the functional status of the soybean [Glycine max (L.) Merr.] paraveinal mesophyll (PVM) vacuole during changes in nitrogen metabolism within the leaf. Young plants grown under standard conditions had PVM vacuoles characterised by the presence of γ-TIP, which is indicative of a lytic function. When plants were then subjected to shoot tip removal for a period of 15 d, forcing a sink-limited physiological condition, the γ-TIP marker diminished while the δ-TIP marker became present in the PVM vacuole, indicating the conversion of the PVM vacuole to a storage function. When the shoot tips were allowed to regrow, the γ-TIP marker again became dominant demonstrating the reversion of these PVM vacuoles back to a lytic compartment. The changes in TIP markers correlated with the accumulation of vegetative storage proteins and vegetative lipoxygenases, proteins implicated in nitrogen storage and assimilate partitioning. This research suggests that the PVM vacuole is able to undergo dynamic conversion between lytic and storage functions and further implicates this cell layer in assimilate storage and mobilisation in soybeans.

Soybean vegetative lipoxygenases are not vacuolar storage proteins

2011 ◽  
Vol 38 (10) ◽  
pp. 778 ◽  
Author(s):  
Glenn W. Turner ◽  
Howard D. Grimes ◽  
B. Markus Lange
Keyword(s):  
Storage Proteins ◽  
Tissue Level ◽  
Protein Bodies ◽  
Specific Antibodies ◽  
Vegetative Storage Proteins ◽  
Paraveinal Mesophyll ◽  
Cast Doubt ◽  
Sink Limitation ◽  
Immuno Cytochemistry

The paraveinal mesophyll (PVM) of soybean is a distinctive uniseriate layer of branched cells situated between the spongy and palisade chlorenchyma of leaves that contains an abundance of putative vegetative storage proteins, Vspα and Vspβ, in its vacuoles. Soybean vegetative lipoxygenases (five isozymes designated as Vlx(A–E)) have been reported to co-localise with Vsp in PVM vacuoles; however, conflicting results regarding the tissue-level and subcellular localisations of specific Vlx isozymes have been reported. We employed immuno-cytochemistry with affinity-purified, isozyme-specific antibodies to reinvestigate the subcellular locations of soybean Vlx isozymes during a sink limitation experiment. VlxB and VlxC were localised to the cytoplasm and nucleoplasm of PVM cells, whereas VlxD was present in the cytoplasm and nucleoplasm of mesophyll chlorenchyma (MC) cells. Label was not associated with storage vacuoles or any evident protein bodies, so our results cast doubt on the hypothesis that Vlx isozymes function as vegetative storage proteins.

scholarly journals Aspects of leaf anatomy of kudzu (Pueraria lobata, Leguminosae-Faboideae) related to water and energy balance

1999 ◽  
Vol 34 (8) ◽  
pp. 1361-1365 ◽  
Author(s):  
Adaucto Bellarmino de Pereira-Netto ◽  
Antonio Carlos Gabriele ◽  
Hilton Silveira Pinto
Keyword(s):  
Cover Crop ◽  
Pueraria Lobata ◽  
Spongy Parenchyma ◽  
Lower Epidermis ◽  
Physiological Plasticity ◽  
Paraveinal Mesophyll ◽  
Palisade And Spongy Parenchyma ◽  
Leaflet Anatomy ◽  
Cuticle Thickness ◽  
Warm Temperate

Kudzu is a cover crop that has escaped cultivation in some subtropical and warm temperate regions. Kudzu has previously demonstrated broad intraspecific physiological plasticity while colonizing new environments. The objective of this paper was to investigate characteristics of kudzu leaflet anatomy that might contribute to its successful growth in climatically distinct environments, and to escape cultivation as well. Fresh and fixed leaflet strips of field-grown plants were analyzed. The lower epidermis of kudzu showed a higher frequency of stomata (147 ± 19 stomata mm-2) than the upper epidermis (26 ± 17 stomata mm-2). The average number of trichomes per square milimeter was 8 for both the upper and the lower epidermis. The average trichome length was 410 ± 200 mum for the upper epidermis and 460 ± 190 mum for the lower epidermis. Cuticle thickness was not considerably different between lower and upper epidermis. The leaflet blade consisted basically of two layers (upper and lower) of unicellular epidermis, two layers of palisade parenchyma and one layer of spongy parenchyma. One layer of paraveinal mesophyll was found between palisade and spongy parenchyma. In conclusion, leaflets of kudzu present anatomical characteristics that might contribute to the broad physiological plasticity shown by kudzu.

Paraveinal mesophyll, and its relationship to vein endings, in Solidago canadensis (Asteraceae)

1989 ◽  
Vol 67 (5) ◽  
pp. 1429-1433 ◽  
Author(s):  
Nels R. Lersten ◽  
Curt L. Brubaker
Keyword(s):  
Sieve Tube ◽  
Middle Layer ◽  
Bundle Sheath ◽  
Vascular Bundles ◽  
Solidago Canadensis ◽  
Mesophyll Cells ◽  
Intermediate Point ◽  
Paraveinal Mesophyll ◽  
Bundle Sheath Cells ◽  
Anatomical Relationship

Paraveinal mesophyll is described from leaves of a common goldenrod species, Solidago canadensis L. (tribe Astereae). This is the first report of paraveinal mesophyll from the Asteraceae. It is a uniseriate middle layer consisting of horizontally lobed cells that form a lacy meshwork between veins. It abuts the tightly cylindrical bundle sheath at the level of the xylem in all vascular bundles. Vein endings, however, differ from other vascular bundles in two ways: sieve tube members may extend to the vein tip, end at an intermediate point, or be absent, and lateral bundle sheath cells distal to the terminal sieve tube member swell greatly or protrude horizontally and interdigitate with adjacent paraveinal mesophyll cells. Cells of both paraveinal mesophyll and bundle sheath have fewer and smaller chloroplasts than other mesophyll cells; the chloroplasts mostly lie adjacent to intercellular spaces. During leaf development, the paraveinal mesophyll layer differentiates before other mesophyll layers. Solidago canadensis paraveinal mesophyll resembles the well-studied paraveinal mesophyll of Glycine max, except for differences in its anatomical relationship to minor veins and vein endings.

Differentiation of Mesophyll and Paraveinal Mesophyll in Soybean Leaf

1991 ◽  
Vol 152 (1) ◽  
pp. 34-41 ◽  
Author(s):  
Karen A. Liljebjelke ◽  
Vincent R. Franceschi
Keyword(s):  
Paraveinal Mesophyll ◽  
Soybean Leaf

Observations on the Development of the Paraveinal Mesophyll of Soybean Leaves

1973 ◽  
Vol 134 (3) ◽  
pp. 232-235 ◽  
Author(s):  
Geoffrey D. Weston ◽  
David D. Cass
Keyword(s):  
Paraveinal Mesophyll ◽  
Soybean Leaves

Allantoinase activity and ureide content of mesophyll and paraveinal mesophyll of soybean leaves

Plant Science ◽  
1987 ◽  
Vol 50 (3) ◽  
pp. 179-187 ◽  
Author(s):  
Stephen A. Costigan ◽  
Vincent R. Franceschi ◽  
Maurice S.B. Ku
Keyword(s):  
Paraveinal Mesophyll ◽  
Soybean Leaves
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