Abstract
On the basis of the variability and location of the secretory tissues in the plant body, the following are suggested: (1) In relation to their surrounding environment, the secretory tissues fulfill two very important ecological functions--protection against herbivores and pathogens and attraction of pollinators. (2) The protective function preceded the function of attraction. (3) The protective secretory tissues are suggested to have expanded during the course of evolution from the leaf mesophyll outside, to the epidermis and its trichomes, and inside the plant body, to the primary and secondary phloem, and, in a few cases, also to the secondary xylem.
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Claims 4
Claim · model-written summary
Plant secretory tissues are suggested to protect against herbivores and pathogens.
- Taxon
- plantsViridiplantaet0
- Organ / stage
- secretory tissuese0
- Outcome
- protection against herbivores and pathogense0
Not reportedDirection
Verbatim
e0“the secretory tissues fulfill two very important ecological functions--protection against herbivores and pathogens and attraction of pollinators.”
t0“plants”
Claim · model-written summary
Plant secretory tissues are suggested to attract pollinators.
- Taxon
- plantsViridiplantaet0
- Organ / stage
- secretory tissuese0
- Interactor
- pollinatorse0pollinator
- Outcome
- attraction of pollinatorse0
Not reportedDirection
Verbatim
e0“the secretory tissues fulfill two very important ecological functions--protection against herbivores and pathogens and attraction of pollinators.”
t0“plants”
Claim · model-written summary
The protective function of plant secretory tissues is proposed to have preceded their attraction function.
- Taxon
- plantsViridiplantaet0
- Outcome
- protective function preceded the function of attractione0
Not reportedDirection
Verbatim
e0“The protective function preceded the function of attraction.”
t0“plants”
Claim · model-written summary
Protective secretory tissues are proposed to have expanded from leaf mesophyll toward epidermis, trichomes and internal phloem, occasionally reaching secondary xylem.
- Taxon
- plantsViridiplantaet0
- Organ / stage
- secretory tissuese0
- Outcome
- expanded during the course of evolution from the leaf mesophyll outside, to the epidermis and its trichomes, and inside the plant body, to the primary and secondary phloem, and, in a few cases, also to the secondary xyleme0
Not reportedDirection
Verbatim
e0“The protective secretory tissues are suggested to have expanded during the course of evolution from the leaf mesophyll outside, to the epidermis and its trichomes, and inside the plant body, to the primary and secondary phloem, and, in a few cases, also to the secondary xylem.”
t0“plants”