Abstract
Juice sac granulation occurring in pummelo fruits [Citrus maxima (Burm.) Merr.] is an undesirable trait, and the underlying mechanism remains unresolved. Previous studies have shown that lignin metabolism is closely associated with the process of juice sac granulation. Here, a method suitable for lignin isolation from pummelo tissues is established. Acetylated lignins from different pummelo tissues and cultivars were analyzed by HSQC NMR. The results showed that lignins in granulated juice sacs were characterized by an extremely high abundance of guaiacyl units (91.13-96.82%), in contrast to lignins from other tissues, including leaves, stems, and segment membranes. The abnormally accumulated lignins in granulated juice sacs were specific and mainly polymerized from coniferyl alcohol. No significant difference was found in lignin types among various cultivars. These findings indicated that the mechanism of juice sac granulation might be similar among various cultivars, although very different degrees of juice sac granulation can be observed.
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Claims 5
Claim · model-written summary
Lignin in granulated juice sacs of pummelo has an extremely high abundance of guaiacyl units compared with other tissues.
- Taxon
- Citrus maxima
Citrus maximat0 - Organ / stage
- granulated juice sacse1
- Outcome
- abundance of guaiacyl unitse1
- Direction
- extremely highe1
- Value
- 91.13-96.82%e1
- Comparator
- other tissuese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Citrus maxima”
e1“lignins in granulated juice sacs were characterized by an extremely high abundance of guaiacyl units (91.13-96.82%), in contrast to lignins from other tissues, including leaves, stems, and segment membranes”
Claim · model-written summary
Abnormally accumulated lignins in granulated juice sacs are specific and mainly polymerized from coniferyl alcohol.
- Taxon
- Citrus maximaCitrus maximat0
- Organ / stage
- granulated juice sacse2
- Compound
- coniferyl alcohole2
- Outcome
- ligninse2
- Qualifier
- specifice2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Citrus maxima”
e2“The abnormally accumulated lignins in granulated juice sacs were specific and mainly polymerized from coniferyl alcohol”
Claim · model-written summary
Lignin types did not differ significantly among pummelo cultivars.
- Taxon
- Citrus maximaCitrus maximat0
- Material
- various cultivarse3
- Outcome
- lignin typese3
- Direction
- No significant differencee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Citrus maxima”
e3“No significant difference was found in lignin types among various cultivars”
Claim · model-written summary
The mechanism of juice sac granulation might be similar among pummelo cultivars.
- Taxon
- Citrus maximaCitrus maximat0
- Material
- various cultivarse4
- Outcome
- mechanism of juice sac granulatione4
- Qualifier
- might be similare4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Citrus maxima”
e4“These findings indicated that the mechanism of juice sac granulation might be similar among various cultivars, although very different degrees of juice sac granulation can be observed”
Claim · model-written summary
Degrees of juice sac granulation differ very strongly among pummelo cultivars.
- Taxon
- Citrus maximaCitrus maximat0
- Outcome
- degrees of juice sac granulatione4
- Qualifier
- very differente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Citrus maxima”
e4“These findings indicated that the mechanism of juice sac granulation might be similar among various cultivars, although very different degrees of juice sac granulation can be observed”