Claim · model-written summary
Pectic substances decreased in content on a dry weight basis during thickening growth or pithy tissue formation in radish root.
- Taxon
- radish root
Raphanus sativust0 - Outcome
- pectic substancese1
- Direction
- decreasee1
- Qualifier
- in dry weight basise1
Verbatim
t0“Studies on the pithiness of radish root. III.”
e1“The pectic substances decrease in content in dry weight basis during the process of thickening growth or of pithy tissue formation”
Title
Studies on the pithiness of radish root. III.
T. TAKANO Journal of the Japanese Society for Horticultural Science 1966. doi:10.2503/jjshs.35.43
Other claims from this paper (10)
- Observation Radish root contains very little water-soluble pectin.
- Observation Each pectic fraction decreased in amount on a fresh weight basis during pithy tissue formation.
- Observation Protopectin was low in the pithy tissue compared with high levels in normal tissue.
- Observation The very insoluble pectate increased in percentage during pithy tissue formation.
- Mechanism It is possible that pectic substances in pithy tissue were transformed from protopectin into highly insoluble pectic acid, and this transformation is related to cell wall sclerosis.
- Observation Total pectic substances and esterified pectin decreased markedly in content on a cross-section area basis during thickening growth or pithiness.
- Observation Esterified pectin was localized in the middle lamella and primary cell wall of young parenchymatous cells, sclerenchymatous cells and meristematic tissues.
- Observation Young meristematic tissues in radish root had a high pectinesterase activity.
- Association The reflectance density of colour has a closer relationship with the number of conducting tissue or meristematic tissue in non-pithy tissue.
- Association If flesh tissue of radish root has a high density of meristematic islands, pithiness is unlikely to occur.