Seasonal changes of phospholipids in last instar larvae of rice stem borer Chilo suppressalis Walker (Lepidoptera: Pyralidae)

Yohei Izumi, Chihiro Katagiri, Shoji Sonoda, Hisaaki Tsumuki

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Phospholipids of the cell membrane have been studied from the viewpoint of how overwintering insects inhabiting temperate zones adapt to low temperature. The transition of cell membrane phospholipids from a liquid crystalline phase to a gel phase is a crucial cause of cold or freezing injuries. We determined the qualitative and quantitative changes of phospholipids in the last instar larvae of the rice stem borer in summer and winter. We found that the total amount of their phospholipids did not change significantly between summer and winter and that the sum of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) comprised about 85% of their total phospholipids. In summer, the ratio of their PE to PC was almost one, while from autumn to mid-winter it increased and reached three in February. The fatty acid compositions of PC hardly changed, and the percentage of unsaturated fatty acids did not exceed 50%. In contrast, the percentage of unsaturated fatty acids of PE in overwintering larvae increased up to 80% as ambient temperatures fell and oleic acid mainly contributed to the high percentage of unsaturation. In the present study, the relationship between the quantitative and qualitative changes of phospholipids and adaptation of the rice stem borer to cold winter climate are discussed.

Original languageEnglish
Pages (from-to)376-381
Number of pages6
JournalEntomological Science
Volume12
Issue number4
DOIs
Publication statusPublished - Dec 2009

Fingerprint

stem borer
Chilo suppressalis
Pyralidae
phospholipid
phospholipids
rice
instars
Lepidoptera
larva
larvae
phosphatidylethanolamines
phosphatidylcholines
fatty acid
winter
overwintering
unsaturated fatty acids
cell membranes
summer
membrane
temperate zones

Keywords

  • Cold hardiness
  • Homeoviscous adaptation
  • Overwintering
  • Phosphatidylcholine
  • Phosphatidylethanolamine
  • Seasonal adaptation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science

Cite this

Seasonal changes of phospholipids in last instar larvae of rice stem borer Chilo suppressalis Walker (Lepidoptera : Pyralidae). / Izumi, Yohei; Katagiri, Chihiro; Sonoda, Shoji; Tsumuki, Hisaaki.

In: Entomological Science, Vol. 12, No. 4, 12.2009, p. 376-381.

Research output: Contribution to journalArticle

Izumi, Yohei ; Katagiri, Chihiro ; Sonoda, Shoji ; Tsumuki, Hisaaki. / Seasonal changes of phospholipids in last instar larvae of rice stem borer Chilo suppressalis Walker (Lepidoptera : Pyralidae). In: Entomological Science. 2009 ; Vol. 12, No. 4. pp. 376-381.
@article{d3913dedfa614d97a2f46a4b9a2f0fb1,
title = "Seasonal changes of phospholipids in last instar larvae of rice stem borer Chilo suppressalis Walker (Lepidoptera: Pyralidae)",
abstract = "Phospholipids of the cell membrane have been studied from the viewpoint of how overwintering insects inhabiting temperate zones adapt to low temperature. The transition of cell membrane phospholipids from a liquid crystalline phase to a gel phase is a crucial cause of cold or freezing injuries. We determined the qualitative and quantitative changes of phospholipids in the last instar larvae of the rice stem borer in summer and winter. We found that the total amount of their phospholipids did not change significantly between summer and winter and that the sum of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) comprised about 85{\%} of their total phospholipids. In summer, the ratio of their PE to PC was almost one, while from autumn to mid-winter it increased and reached three in February. The fatty acid compositions of PC hardly changed, and the percentage of unsaturated fatty acids did not exceed 50{\%}. In contrast, the percentage of unsaturated fatty acids of PE in overwintering larvae increased up to 80{\%} as ambient temperatures fell and oleic acid mainly contributed to the high percentage of unsaturation. In the present study, the relationship between the quantitative and qualitative changes of phospholipids and adaptation of the rice stem borer to cold winter climate are discussed.",
keywords = "Cold hardiness, Homeoviscous adaptation, Overwintering, Phosphatidylcholine, Phosphatidylethanolamine, Seasonal adaptation",
author = "Yohei Izumi and Chihiro Katagiri and Shoji Sonoda and Hisaaki Tsumuki",
year = "2009",
month = "12",
doi = "10.1111/j.1479-8298.2009.00336.x",
language = "English",
volume = "12",
pages = "376--381",
journal = "Entomological Science",
issn = "1343-8786",
publisher = "Wiley-Blackwell",
number = "4",

}

TY - JOUR

T1 - Seasonal changes of phospholipids in last instar larvae of rice stem borer Chilo suppressalis Walker (Lepidoptera

T2 - Pyralidae)

AU - Izumi, Yohei

AU - Katagiri, Chihiro

AU - Sonoda, Shoji

AU - Tsumuki, Hisaaki

PY - 2009/12

Y1 - 2009/12

N2 - Phospholipids of the cell membrane have been studied from the viewpoint of how overwintering insects inhabiting temperate zones adapt to low temperature. The transition of cell membrane phospholipids from a liquid crystalline phase to a gel phase is a crucial cause of cold or freezing injuries. We determined the qualitative and quantitative changes of phospholipids in the last instar larvae of the rice stem borer in summer and winter. We found that the total amount of their phospholipids did not change significantly between summer and winter and that the sum of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) comprised about 85% of their total phospholipids. In summer, the ratio of their PE to PC was almost one, while from autumn to mid-winter it increased and reached three in February. The fatty acid compositions of PC hardly changed, and the percentage of unsaturated fatty acids did not exceed 50%. In contrast, the percentage of unsaturated fatty acids of PE in overwintering larvae increased up to 80% as ambient temperatures fell and oleic acid mainly contributed to the high percentage of unsaturation. In the present study, the relationship between the quantitative and qualitative changes of phospholipids and adaptation of the rice stem borer to cold winter climate are discussed.

AB - Phospholipids of the cell membrane have been studied from the viewpoint of how overwintering insects inhabiting temperate zones adapt to low temperature. The transition of cell membrane phospholipids from a liquid crystalline phase to a gel phase is a crucial cause of cold or freezing injuries. We determined the qualitative and quantitative changes of phospholipids in the last instar larvae of the rice stem borer in summer and winter. We found that the total amount of their phospholipids did not change significantly between summer and winter and that the sum of phosphatidylcholine (PC) and phosphatidylethanolamine (PE) comprised about 85% of their total phospholipids. In summer, the ratio of their PE to PC was almost one, while from autumn to mid-winter it increased and reached three in February. The fatty acid compositions of PC hardly changed, and the percentage of unsaturated fatty acids did not exceed 50%. In contrast, the percentage of unsaturated fatty acids of PE in overwintering larvae increased up to 80% as ambient temperatures fell and oleic acid mainly contributed to the high percentage of unsaturation. In the present study, the relationship between the quantitative and qualitative changes of phospholipids and adaptation of the rice stem borer to cold winter climate are discussed.

KW - Cold hardiness

KW - Homeoviscous adaptation

KW - Overwintering

KW - Phosphatidylcholine

KW - Phosphatidylethanolamine

KW - Seasonal adaptation

UR - http://www.scopus.com/inward/record.url?scp=73449100152&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73449100152&partnerID=8YFLogxK

U2 - 10.1111/j.1479-8298.2009.00336.x

DO - 10.1111/j.1479-8298.2009.00336.x

M3 - Article

AN - SCOPUS:73449100152

VL - 12

SP - 376

EP - 381

JO - Entomological Science

JF - Entomological Science

SN - 1343-8786

IS - 4

ER -