Abstract
Drying of immature seeds of Ricinus communis L. cv. Hale (castor bean) during the desiccation-tolerant phase of development causes them to germinate upon subsequent rehydration. This desiccation-induced switch from development to germination is also mirrored by a change in the pattern of soluble and insoluble protein synthesis within the cotyledons of the castor bean. Following rehydration of seeds prematurely dried at 40 d after pollination (DAP), cotyledonary proteins characteristic of development (e.g. storage proteins) are no longer synthesized; hydrolytic processes resulting in their degradation commence (after 12 h) in a manner similar to that observed following imbibition of the mature seed. A pattern of protein synthesis recognizable as germination/growth-associated occurs; premature drying has elicited a redirection in metabolism from a developmental to a germinative mode. Desiccation is also required for the induction (within cotyledons of 35 DAP seeds) of enzymes involved in protein reserve breakdown (leucyl β-naphthylamidase; LeuNAase) and lipid utilization (isocitrate lyase; ICL), an event intimately associated with the post-germinative (growth) phase of seedling development. Thus, at a desiccation-tolerant stage of development, premature drying results in the suppression of the developmental metabolic programme and a permanent switching-on of the germination/growth metabolic programme.
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Claims 7
Claim · model-written summary
Drying immature seeds caused germination after rehydration.
- Taxon
- Ricinus communis L. cv. Hale
Ricinus communise0 - Organ / stage
- immature seedse0
- Treatment
- Dryinge0
- Outcome
- germinate upon subsequent rehydratione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drying of immature seeds of Ricinus communis L. cv. Hale (castor bean) during the desiccation-tolerant phase of development causes them to germinate upon subsequent rehydration”
Claim · model-written summary
Premature drying changed soluble and insoluble protein synthesis in cotyledons.
- Taxon
- castor beanRicinus communise0
- Organ / stage
- cotyledonse0
- Treatment
- desiccatione0
- Outcome
- pattern of soluble and insoluble protein synthesise0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“desiccation-induced switch from development to germination is also mirrored by a change in the pattern of soluble and insoluble protein synthesis within the cotyledons of the castor bean”
Claim · model-written summary
Rehydrated prematurely dried seeds stopped synthesizing development-associated cotyledon proteins.
- Taxon
- castor beanRicinus communise1
- Treatment
- prematurely dried at 40 d after pollination (DAP)e0
- Outcome
- cotyledonary proteins characteristic of developmente0
- Direction
- no longer synthesizede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Following rehydration of seeds prematurely dried at 40 d after pollination (DAP), cotyledonary proteins characteristic of development (e.g. storage proteins) are no longer synthesized”
t0“The Role of Maturation Drying in the Transition from Seed Development to Germination”
e1“Drying of immature seeds of Ricinus communis L. cv. Hale (castor bean) during the desiccation-tolerant phase of development causes them to germinate upon subsequent rehydration”
Claim · model-written summary
Storage protein degradation began after 12 hours in prematurely dried seeds.
- Taxon
- castor beanRicinus communise1
- Outcome
- degradatione0
- Value
- 12 he0
- Comparator
- mature seede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydrolytic processes resulting in their degradation commence (after 12 h) in a manner similar to that observed following imbibition of the mature seed”
t0“The Role of Maturation Drying in the Transition from Seed Development to Germination”
e1“Drying of immature seeds of Ricinus communis L. cv. Hale (castor bean) during the desiccation-tolerant phase of development causes them to germinate upon subsequent rehydration”
Claim · model-written summary
Premature drying elicited germination and growth-associated protein synthesis.
- Taxon
- castor beanRicinus communise1
- Treatment
- premature dryinge0
- Outcome
- pattern of protein synthesis recognizable as germination/growth-associatede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A pattern of protein synthesis recognizable as germination/growth-associated occurs; premature drying has elicited a redirection in metabolism from a developmental to a germinative mode”
t0“The Role of Maturation Drying in the Transition from Seed Development to Germination”
e1“Drying of immature seeds of Ricinus communis L. cv. Hale (castor bean) during the desiccation-tolerant phase of development causes them to germinate upon subsequent rehydration”
Claim · model-written summary
Desiccation was required to induce leucyl β-naphthylamidase in 35 DAP cotyledons.
- Taxon
- castor beanRicinus communise1
- Organ / stage
- cotyledons of 35 DAP seedse0
- Treatment
- Desiccatione0
- Gene
- leucyl β-naphthylamidasee0
- Outcome
- inductione0
- Direction
- inductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Desiccation is also required for the induction (within cotyledons of 35 DAP seeds) of enzymes involved in protein reserve breakdown (leucyl β-naphthylamidase; LeuNAase)”
t0“The Role of Maturation Drying in the Transition from Seed Development to Germination”
e1“Drying of immature seeds of Ricinus communis L. cv. Hale (castor bean) during the desiccation-tolerant phase of development causes them to germinate upon subsequent rehydration”
Claim · model-written summary
Desiccation was required to induce isocitrate lyase in 35 DAP cotyledons.
- Taxon
- castor beanRicinus communise1
- Organ / stage
- cotyledons of 35 DAP seedse0
- Treatment
- Desiccatione0
- Gene
- isocitrate lyasee0
- Outcome
- inductione0
- Direction
- inductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Desiccation is also required for the induction (within cotyledons of 35 DAP seeds) of enzymes involved in protein reserve breakdown (leucyl β-naphthylamidase; LeuNAase) and lipid utilization (isocitrate lyase; ICL)”
t0“The Role of Maturation Drying in the Transition from Seed Development to Germination”
e1“Drying of immature seeds of Ricinus communis L. cv. Hale (castor bean) during the desiccation-tolerant phase of development causes them to germinate upon subsequent rehydration”
The same questions in other papers
processing · growth · Ricinus communis (castor bean)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
2 papers more in this group
See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.