Abstract
The localization of invertase, a key enzyme in plant carbohydrate metabolism, has been established in several higher plants, but there are no reports of it in ferns. The aim of the present work was to establish the localization of the previously reported acid invertase activity of Pteris deflexa in fronds tissues and to compare the findings with invertase localization in higher plants. Acid invertase, localized by immuno-histochemical and histochemical techniques on fresh tissues, was evident in vascular tissue, mainly in phloem. It was also detected in parenchymatic, sclerenchymatic and epidermic cells of petiole, rachis and rachis branches as well as in veins of leaf blades. Our results demonstrate that P. deflexa acid invertase localization is the same to that of higher plants. Hence, potential roles of the fern enzyme in relation to the storage and utilization of sucrose and to control carbon flux could be the same of those proposed to higher plants.
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Claims 3
Claim · model-written summary
Acid invertase was evident mainly in the phloem of Pteris deflexa vascular tissue.
- Taxon
- Pteris deflexa
Pteris deflexat0 - Organ / stage
- vascular tissue, mainly in phloeme0
- Gene
- Acid invertasee0
- Outcome
- Acid invertasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acid invertase, localized by immuno-histochemical and histochemical techniques on fresh tissues, was evident in vascular tissue, mainly in phloem.”
t0“Pteris deflexa Link”
Claim · model-written summary
Acid invertase was also detected in cells of the petiole, rachis, rachis branches, and leaf blade veins.
- Taxon
- Pteris deflexaPteris deflexat0
- Organ / stage
- parenchymatic, sclerenchymatic and epidermic cells of petiole, rachis and rachis branches as well as in veins of leaf bladese0
- Outcome
- detectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was also detected in parenchymatic, sclerenchymatic and epidermic cells of petiole, rachis and rachis branches as well as in veins of leaf blades.”
t0“Pteris deflexa Link”
Claim · model-written summary
Acid invertase localization in P. deflexa was similar to that of higher plants.
- Taxon
- P. deflexaPteris deflexae0
- Outcome
- acid invertase localizatione0
- Direction
- the samee0
- Comparator
- higher plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results demonstrate that P. deflexa acid invertase localization is the same to that of higher plants.”