+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effects of Plant Growth Substances on the Conchocelis Phase of Alaskan Porphyra (Bangiales, Rhodophyta) Species in Conjunction with Environmental Variables



Effects of Plant Growth Substances on the Conchocelis Phase of Alaskan Porphyra (Bangiales, Rhodophyta) Species in Conjunction with Environmental Variables



Journal of phycology 43(5): 1094-1103



The effect of plant growth substances (PGSs) on conchocelis growth of Alaskan Porphyra (P. abbottiae V. Krishnam., P. pseudolanceolata V. Krishnam., P. pseudolinearis Ueda) was investigated. Growth was measured under different combinations of PGS concentrations (0, 0.1, 0.2, 0.4, 0.8, 1.6, and 3.2 ppm), PGS type (gibberellic acid, kinetin, and indole-3-acetic acid), temperature (7, 11, and 15pC), and photoperiod (16:8 light:dark [L:D] cycle and 8:16 L:D cycle). Plant growth substances effectively promoted the growth of Porphyra conchocelis. Depending on culture conditions, growth rates were increased relative to controls 6.9%-31.7% for P. abbottiae, 4.7%-25.7% for P. pseudolanceolata, and 8.9%-35.1% for P. pseudolinearis. Maximal growth of P. abbottiae occurred with 0.8 ppm kinetin, 15pC, and short-day conditions (8:16 L:D). Porphyra pseudolanceolata exhibited maximal growth with 0.4 ppm indole-3-acetic acid, 7pC, and long days (16:8 L:D). Indole-3-acetic acid also effected maximal growth of P. pseudolinearis at 0.4 ppm, 15pC, and long-day conditions (16:8 L:D). For P. abbottiae and P. pseudolinearis, intermediate PGS concentrations (0.4-1.6 ppm) had the greatest growth-stimulating effects, whereas for P. pseudolanceolata, higher growth generally occurred at lower concentrations (0.1-0.8 ppm). Kinetin and indole-3-acetic acid had more influence on the conchocelis phase than gibberellic acid. The PGS concentrations greater than 1.6 ppm had a diminishing effect on growth, especially in P. pseudolanceolata. For P. abbottiae and P. pseudolinearis, higher temperatures resulted in higher growth rates, in contrast to P. pseudolanceolata, which grew faster at the lower temperatures.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 015649257

Download citation: RISBibTeXText

DOI: 10.1111/j.1529-8817.2007.00388.x


Related references

Phycobilin Content of the Conchocelis Phase of Alaskan Porphyra (Bangiales, Rhodophyta) Species: Responses to Environmental Variables(1). Journal of Phycology 47(1): 208-214, 2011

Photosynthesis and respiration of the conchocelis stage of Alaskan Porphyra Bangiales, Rhodophyta species in response to environmental variables. Journal of Phycology 44(3): 573-583, 2008

Growth of the conchocelis phase of Porphyra columbina (Bangiales, Rhodophyta) at different temperatures and levels of light, nitrogen and phosphorus. Phycological Research 43(4): 249-253, 1995

Assessment of photosynthetic performance of porphyra yezoensis bangiales, rhodophyta in conchocelis phase. Journal of Phycology 48(2): 467-470, 2012

Effects of UV radiation on the photosynthesis of conchocelis of Porphyra haitanensis Bangiales, Rhodophyta. Phycologia 47(3): 241-248, 2008

Free amino acid contents of the gametophytic blades from the green mutant conchocelis and the heterozygous conchocelis in Porphyra yezoensis Ueda (Bangiales, Rhodophyta). Journal of Applied Phycology 15(5): 407-413, 2003

Rapid DNA extraction from conchocelis and ITS-1 rDNA sequences of seven strains of cultivated Porphyra yezoensis (Bangiales, Rhodophyta). Journal of Applied Phycology 15(1): 29-35, 2003

Physiological responses of blade and conchocelis of Porphyra vietnamensis Tanaka et Pham-Hoang Ho (Bangiales, Rhodophyta) from Thailand in culture. Algae 18(1): 21-28, 2003

Genetic Diversity and Introgression in two Cultivated Species (Porphyra Yezoensis and Porphyra Tenera) and Closely Related Wild Species of Porphyra (Bangiales, Rhodophyta)(1). Journal of Phycology 45(2): 493-502, 2009

Growth and reproductive responses of the conchocelis phase ofPyropia hollenbergii(Bangiales, Rhodophyta) to light and temperature. Journal of Applied Phycology 27(4): 1561-1570, 2015

Observations on the distribution and seasonal occurrence of porphyra schizophylla porphyra torta and porphyra brumalis new species rhodophyta bangiales. Syesis 8: 321-332, 1975

Effects of temperature and ammonium on growth, pigment production and nitrogen uptake by four species of Porphyra (Bangiales, Rhodophyta) native to the New England coast. Journal of applied phycology 19(5): 431-440, 2007

The conchocelis phase of 3 species of porphyra in culture porphyra perforata porphyra cuneiformis porphyra nereocystis. Journal Of Phycology: 42-47, 1969

Karyological studies in porphyra c. agardh i. chromosome number in phase of porphyra columbina montagne bangiales rhodophyta. Hoehnea 17(1): 91-98, 1990

Environmental factors affecting formation and release of conchospores in a Mediterranean species of Porphyra (Rhodophyta, Bangiales) in culture. Giornale Botanico Italiano 126(6): 743-745, 1992