Effects of Root-zone Heating on Elemental Composition of Calceolaria

White, John W.; Biernbaum, John A.

doi:10.21273/jashs.109.3.350

Cited by 5 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Interestingly, under low-temperature stress, although ABA was able to promote iron accumulation, iron accumulation in leaves did not decrease substantially after ABA synthesis was inhibited ( Figure 7 ). To initially investigate the regulatory principles, we measured the expression of SlZIP1 and SlZIP3 , key genes involved in iron transport, after external application of ALA and ABA at low temperature and found that they were significantly up-regulated ( Figure S2 ) [ 38 ]. Therefore, we speculated that it is because inhibition of ABA synthesis leads to an increase in ALA content, which can also promote the expression of iron transporter-related genes and iron accumulation, thus counteracting the negative effects of the ABA synthesis inhibitor.…”

Section: Discussionmentioning

confidence: 99%

Crosstalk between 5-Aminolevulinic Acid and Abscisic Acid Adjusted Leaf Iron Accumulation and Chlorophyll Synthesis to Enhance the Cold Tolerance in Solanum lycopersicum Seedlings

Kang

Zhang

Cai

et al. 2023

IJMS

View full text Add to dashboard Cite

Previous studies found that 5-aminolevulinic acid (ALA) and abscisic acid (ABA) can mitigate damage from adversity by enhancing photosynthesis. However, it is not clear whether they have positive effects on iron utilization and chlorophyll synthesis of tomato seedlings under low-temperature stress. To investigate the possible functional relationship between ABA and ALA and elucidate the possible mechanisms of action of ALA to alleviate low-temperature stress in tomato seedlings, this experiment analyzed the effects of ALA and ABA on chlorophyll synthesis in tomato seedling leaves sprayed with exogenous of ALA (25 mg·L−1) or ABA (100 µM) under low-temperature stress (8–18 °C/8–12 °C, day/night). The results show that exogenous ALA increased the Fv/Fm of tomato leaves by 5.31% and increased the accumulation of iron and chlorophyll by 101.15% and 15.18%, respectively, compared to the low-temperature treatment alone, and tomato resistance of low-temperature stress was enhanced. Meanwhile, exogenous application of ALA increased the ABA content by 39.43%, and subsequent application of exogenous ABA revealed that tomato seedlings showed similar effects to exogenous ALA under low-temperature stress, with increased accumulation of iron and chlorophyll in tomato seedlings, which eventually increased the maximum photochemical efficiency of PS II. Under low-temperature stress, application of exogenous ABA significantly reduced ALA content, but the expression of key enzyme genes (PPGD, HEMB1, HEME1, and HEMF1), precursors of chlorophyll synthesis by ALA, was significantly elevated, presumably because the increased activity of these enzymes after external application of ABA accelerated ALA consumption. In conclusion, ABA may crosstalk with ALA to improve the photochemical efficiency and low temperature resistance of tomatoes by regulating chlorophyll synthesis and iron accumulation.

show abstract

Section: Discussionmentioning

confidence: 99%

Crosstalk between 5-Aminolevulinic Acid and Abscisic Acid Adjusted Leaf Iron Accumulation and Chlorophyll Synthesis to Enhance the Cold Tolerance in Solanum lycopersicum Seedlings

Kang

Zhang

Cai

et al. 2023

IJMS

View full text Add to dashboard Cite

show abstract

“…Energy conservation practices should reduce energy consumption per unit of fresh or dry weight while maintaining or increasing plant quality. Reduced air temperatures for part of the night (SN heating), and soil warming (RZ heating) can reduce energy consumption (2,4,7,9,14,16). Studies have examined whole-plant growth responses to RZ temperatures (3,8,10), but few have considered the seedling growth period separately.…”

mentioning

confidence: 99%

Growth of Bedding Plants in Response to Root-zone Heating and Night Temperature Regimes

Shedlosky

White

1987

J. Amer. Soc. Hort. Sci.

View full text Add to dashboard Cite

Nine bedding plant vegetable and flower cultivars were grown in each of 10 night air and root media temperature regimes. Generally, fresh and dry weights were greater at 16°C than at 7° night air temperature when root-zone (RZ) heating was not used. Soil warming increased fresh and dry weights of all cultivars grown at 16° night air temperatures. When air temperatures were below 16°, soil warming maintained fresh and dry weights equivalent to or better than plants grown at 16° without soil warming. Two split-night (SN) air temperature regimes were as effective as a constant 16° night temperature, ranking first and 3rd in fresh and dry weight per unit of energy consumption. All soil warming treatments had higher energy productivity than the 16° air temperature treatment with no RZ heating.

show abstract

Metabolic processes in adventitious rooting of cuttings

Haissig

1986

New Root Formation in Plants and Cuttings

121

View full text Add to dashboard Cite

Effects of Root-zone Heating on Elemental Composition of Calceolaria

Cited by 5 publications

References 14 publications

Crosstalk between 5-Aminolevulinic Acid and Abscisic Acid Adjusted Leaf Iron Accumulation and Chlorophyll Synthesis to Enhance the Cold Tolerance in Solanum lycopersicum Seedlings

Crosstalk between 5-Aminolevulinic Acid and Abscisic Acid Adjusted Leaf Iron Accumulation and Chlorophyll Synthesis to Enhance the Cold Tolerance in Solanum lycopersicum Seedlings

Growth of Bedding Plants in Response to Root-zone Heating and Night Temperature Regimes

Metabolic processes in adventitious rooting of cuttings

Contact Info

Product

Resources

About