Abstract
The lily cultivar introduction is a very long process and bulblet development a limiting element in the entire cycle. The aim of the present study was to acquire a highly synchronized model system to gain insight into the bulbing process. Subsequently, this system was implemented to quantify the efficacy of humic acid applications to evaluate the hypothesized positive effect on bulblet growth. Based on weight, bulblet production was promoted with low humic acid concentration treatment (0.2 mg/L, LHA), showing 0.47 g weight and 11.68 mm diameter, while inhibitory effects were observed with increased doses. LHA significantly decreased the gibberellic acid content, and a pronounced phytohormone balance (promotive/inhibitive) was observed, which might be beneficial for the translocation of assimilates from the shoot to sink organs (bulblets). Intriguingly, LHA increased superoxide dismutase, peroxidase, ascorbate peroxidase, catalase, and glutathione reductase activities compared with the control during the early development stages, implicating a possible role for elimination of reactive oxygen species, thereby favouring cell expansion. In conclusion, we initially reported the effects of HA on the development of bulbous plants, showing that a relatively low dose markedly increased the bulblets size via positive GA and antioxidant responses. However, the mechanism of action needs further evaluation.
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Claims 7
Claim · model-written summary
Low humic acid treatment promoted bulblet weight to 0.47 g.
- Treatment
- low humic acid concentration treatment (0.2 mg/L, LHA)e0
- Outcome
- weighte0
- Direction
- promotede0
- Value
- 0.47 ge0
LiliumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bulblet production was promoted with low humic acid concentration treatment (0.2 mg/L, LHA), showing 0.47 g weight and 11.68 mm diameter”
t0“LiliumOriental hybrids ‘Sorbonne’”
Claim · model-written summary
Low humic acid treatment promoted bulblet diameter to 11.68 mm.
- Treatment
- low humic acid concentration treatment (0.2 mg/L, LHA)e0
- Outcome
- diametere0
- Direction
- promotede0
- Value
- 11.68 mme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bulblet production was promoted with low humic acid concentration treatment (0.2 mg/L, LHA), showing 0.47 g weight and 11.68 mm diameter”
t0“LiliumOriental hybrids ‘Sorbonne’”
Claim · model-written summary
Increased humic acid doses inhibited bulblet production.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inhibitory effects were observed with increased doses”
t0“LiliumOriental hybrids ‘Sorbonne’”
Claim · model-written summary
Low humic acid significantly decreased gibberellic acid content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LHA significantly decreased the gibberellic acid content”
t0“LiliumOriental hybrids ‘Sorbonne’”
Claim · model-written summary
Low humic acid treatment increased superoxide dismutase, peroxidase, and ascorbate peroxidase activities versus control.
- Organ / stage
- early development stagese0
- Treatment
- LHAe0
- Outcome
- superoxide dismutase, peroxidase, ascorbate peroxidasee0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LHA increased superoxide dismutase, peroxidase, ascorbate peroxidase, catalase, and glutathione reductase activities compared with the control during the early development stages”
t0“LiliumOriental hybrids ‘Sorbonne’”
Claim · model-written summary
Low humic acid treatment increased catalase and glutathione reductase activities versus control.
- Organ / stage
- early development stagese0
- Treatment
- LHAe0
- Outcome
- catalase, and glutathione reductase activitiese0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“LHA increased superoxide dismutase, peroxidase, ascorbate peroxidase, catalase, and glutathione reductase activities compared with the control during the early development stages”
t0“LiliumOriental hybrids ‘Sorbonne’”
Claim · model-written summary
The authors suggest antioxidant responses may help eliminate reactive oxygen species and favor cell expansion.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“implicating a possible role for elimination of reactive oxygen species, thereby favouring cell expansion”
t0“LiliumOriental hybrids ‘Sorbonne’”
The same questions in other papers
other · growth · LiliumResults agree
1 paper in the same direction as this paper
- positive
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.