Effects of polyamines on the early development of cystocarps, spore release, survival, and germination rate of <italic style="font-style: italic">Gracilariopsis</italic> <italic style="font-style: italic">lemaneiformis</italic>

Deguang SUN; Emon RAHMAN; Siqi SUN; Xue SUN; Nianjun XU

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Effects of polyamines on the early development of cystocarps, spore release, survival, and germination rate of Gracilariopsis lemaneiformis

Biology | Updated：2024-10-12

- Effects of polyamines on the early development of cystocarps, spore release, survival, and germination rate of Gracilariopsis lemaneiformis
- Journal of Oceanology and Limnology Vol. 41, Issue 3, Pages: 1133-1144(2023)
- Affiliations：
  
  Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University, Ningbo 315211, China
- Author bio：
  
  xunianjun@nbu.edu.cn
- Funds：
- DOI：
  CLC：
- Received：27 November 2021，
  
  Published：01 May 2023
- Accepted：
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SUN Deguang,RAHMAN Emon,SUN Siqi,et al.Effects of polyamines on the early development of cystocarps, spore release, survival, and germination rate of Gracilariopsislemaneiformis[J].Journal of Oceanology and Limnology,2023,41(03):1133-1144.
DOI：

SUN Deguang,RAHMAN Emon,SUN Siqi,et al.Effects of polyamines on the early development of cystocarps, spore release, survival, and germination rate of Gracilariopsislemaneiformis[J].Journal of Oceanology and Limnology,2023,41(03):1133-1144. DOI：

摘要

Abstract

Three polyamines (PAs) (spermidine (Spd)

spermine (Spm)

and putrescine (Put)) were used as growth regul

ators to the marine macroalgae

Gracilariopsis

lemaneiformis

and to female gametophyte and reproductive tissues (cystocarps were constructed)

which led to early maturation of cystocarps and spore release. Laboratory cultivation revealed that exogenous PA application accelerated the development of cystocarps

and the mean sporeling growth rate was 20%‍‍‍–‍50%/d during the initial week of cultivation. The spore count (SC)

survival rate (SR)

and germination rate (GR) of

lemaneiformis

showed different responses to PA (10

-6

mol/L and 10

-3

mol/L) treatments under different temperatures (18

and 34 °‍‍C)

light intensities (30

and 90 µmol photons/(m

·s))

salinities (25

and 35)

and nutrient levels (25꞉2.5

50꞉5.0

and 75꞉7.5 µmol/L NH

Cl꞉K

HPO

)

and the optimal conditions were 26 °‍‍C

light intensity of 60 µmol/(m

·s)

salinity of 35

and nutrient level of 50꞉5.0 µmol/L NH

Cl꞉K

HPO

. Under the optimum conditions

the SC per cystocarp increased by 82.38%

and the spore SR and GR increased by 33.07% and 46.44%

respectively. Each experiment lasted for 7 days

with the highest SC on Day 4 and plateauing on Day 7. The results indicate that PAs could promote the early maturation

spore release

survival

and germination of

lemaneiformis

under laboratory conditions.

关键词

Keywords

references

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Related Author

Emon RAHMAN

Siqi SUN

Xue SUN

Nianjun XU

Deguang SUN

Ding LÜ

Chengsong ZHANG

Yang YU

Related Institution

Key Laboratory of Marine Biotechnology of Zhejiang Province, School of Marine Sciences, Ningbo University

Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences

Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao)

Center for Ocean Mega-Science, Chinese Academy of Sciences

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Effects of polyamines on the early development of cystocarps, spore release, survival, and germination rate of Gracilariopsis lemaneiformis

DOI：

摘要

Abstract

关键词

Keywords

references