Nucleic acid, nucleotide and protein concentrations in the pea aphid, Acyrthosiphon pisum, during larval growth and development

Srivastava, Pradeep; Auclair, J. L.; Srivastava, Uma

doi:10.1016/0020-1790(80)90075-x

Cited by 11 publications

(6 citation statements)

References 18 publications

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“…It has been shown that in diet-reared A. pisum, the RNA, protein, and growth curves reached their peaks at the same time, and that there was no indication that in such aphids RNA synthesis preceded protein synthesis [7]; somewhat similar results were obtained in the present studies where RNA contents were correlated with the protein concentrations. However, on glutamic acid, glycine, proline, and serine solutions, RNA synthesis was very high, but protein synthesis was not.…”

Section: Discussionsupporting

confidence: 89%

“…Many amino acids, when given singly to A. pisum in 35% sucrose solution, supported growth and increased survival [5,61; and uniformly labeled [14C] leucine was incorporated into the protein fraction of the larval body and exuviae of A. pisurn, indicating that it took part in protein synthesis even in the absence of dietary essential amino acids [5]. Protein, nucleic acids, and nucleotide syntheses were studied in a number of insects including the pea aphid [7,81, and recent reviews on the subject are those by Chen [9], Berry [lo], and Kaulenas [ll].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of proteins and nucleic acids by the pea aphid Acyrthosiphon pisum (aphididae) in the absence of a full complement of dietary amino acids

Srivastava

Thakur

et al. 1987

Arch Insect Biochem Physiol

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Protein, nucleic acids, and nucleotide syntheses were studied in pea aphids, Acyrthosiphon pisum (Harris), by feeding them labeled I4C-amino acids and [5-3H]-orotic acid in sucrose. It was demonstrated that in the absence of dietary essential amino acids, aphids were capable of synthesizing nucleic acids, nucleotides, and proteins when provided with a single dietary amino acid in sucrose. It is suggested that other required amino acids were possibly supplied by the symbionts present in the pea aphid andlor were obtained from the amino acid pool in the hemolymph or glucose, one of the end products of sucrose digestion. Of the various amino acids tested, synthesis of measurable amounts of protein or other compounds occurred when alanine, aspartic acid, glutamic acid, glycine, proline, or serine were provided, but no synthesis occurred with cysteine.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Synthesis of proteins and nucleic acids by the pea aphid Acyrthosiphon pisum (aphididae) in the absence of a full complement of dietary amino acids

Srivastava

Thakur

et al. 1987

Arch Insect Biochem Physiol

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“…The presence of only one or two copies of the rRNA operon appears to be restricted to bacteria with very slow growth (14). This is probably also true for the endosymbionts which should approximate the growth rate of the aphid host (25).…”

Section: Resultsmentioning

confidence: 98%

Evidence for the establishment of aphid-eubacterium endosymbiosis in an ancestor of four aphid families

et al. 1991

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Aphids (superfamily Aphidoidea) contain eubacterial endosymbionts localized within specialized cells (mycetocytes). The endosymbionts are essential for the survival of the aphid hosts. Sequence analyses of the 16S rRNAs from endosymbionts of 11 aphid species from seven tribes and four families have indicated that the endosymbionts are monophyletic. Furthermore, phylogenetic relationships within the symbiont clade parallel the relationships of the corresponding aphid hosts. Our findings suggest that this endocytobiotic association was established in a common ancestor of the four aphid families with subsequent diversification into the present species of aphids and their endosymbionts.

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“…This is not surprising, since development stages of the host experienced by the two cohorts of parasites differed so much (Fig. 1), and it has been frequently shown that qualitative changes often take place in the haemolymph composition (Srivastava et aL, 1980(Srivastava et aL, , 1981Wheeler and Goldsworthy, 1983;Acree et aL, 1965;Nowosielski & Patton, 1965) and other tissues (Agrell & Lundquist, 1973) of insects as they develop.…”

Section: Discussionmentioning

confidence: 92%

Development, adult size and fecundity of Aphidius sonchi reared in two instars of its aphid host, Hyperomyzus lactucae

Liu

1985

Entomologia Exp Applicata

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Development, adult size and fecundity of the aphid parasite, Aphidius sonchi Marshall (Hymenoptera: Aphidiidae), which began their development in the first and third instar nymphs of Hyperomyzus lactucae (L.) (Homoptera: Aphididae), were studied in the laboratory. Survival and development times were almost identical in the two host instars. However, adult parasites reared in the first instar hosts were smaller and had fewer eggs at emergence than those reared from the third instar. Further analysis showed that the size of an adult parasite, irrespective of host stage at reception of the parasite egg, was largely determined by the size of the host when the parasite was in its destructive feeding phase. Furthermore, within parasites reared from each of the two host instars, the earlier emerging individuals were larger and contained more eggs on emergence. However, the relationships between size, development time and fecundity in the parasites differed significantly between cohorts reared from the two host instars. These results indicate that (1) the suitability of the aphid to the development of the parasite varies as the aphid develops, and (2) several aspects of the parasite biology must be studied to show the relative suitability of the aphids of a given instar. RÉSUMÉ Développement, fécondité et taille des adultes d'Aphidius sonchi élevés dans deux stades du puceron Hyperomyzus lactucae L'étude a porté sur le développement, la fécondité et la taille des adultes d'A. sonchi Marshall (Hym: Aphidiidae) qui commence son développement dans le ler et le 3ème stades larvaires d'H. lactucae (Homopt: Aphididae). La survie et la durée de développement sont presque identiques dans les hôtes des deux stades. Cependant les adultes élevés dans le ler stade de l'hôte étaient plus petits et avaient moins d'oeufs à l'émergence que ceux élevés dans le 3ème stade. Des observations ultérieures ont montré que la taille de l'adulte, indépendamment du stade de l'hôte au moment de la réception de l'oeuf, était fortement déterminée par la taille de l'hôte au moment où la larve du parasite était dans sa phase alimentaire destructrice. De plus, parmi les parasites élevés à partir des hôtes de chacun des deux stades, les premiers émergés étaient plus gros et contenaient plus d'oeufs. Cependant la relation entre taille, durée de développement et fécondité des parasites différait significativement suivant les cohortes élevées à partir des hôtes des deux stades. Ces résultats indiquent (1) que l'adéquation du puceron au développement du parasite change pendant que le puceron se développe et (2) que différents aspects de la biologie du parasite doivent être étudiés pour montrer l'adéquation relative des pucerons d'un stade donné.

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Nucleic acid, nucleotide and protein concentrations in the pea aphid, Acyrthosiphon pisum, during larval growth and development

Cited by 11 publications

References 18 publications

Synthesis of proteins and nucleic acids by the pea aphid Acyrthosiphon pisum (aphididae) in the absence of a full complement of dietary amino acids

Synthesis of proteins and nucleic acids by the pea aphid Acyrthosiphon pisum (aphididae) in the absence of a full complement of dietary amino acids

Evidence for the establishment of aphid-eubacterium endosymbiosis in an ancestor of four aphid families

Development, adult size and fecundity of Aphidius sonchi reared in two instars of its aphid host, Hyperomyzus lactucae

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