ArticleJournal of experimental botany2010
Petunia nectar proteins have ribonuclease activity.
Article in Journal of experimental botany, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 44 citations in OpenAlex.
- Nectar peroxide: assessing variation among plant species, microbial tolerance, and effects on microbial community assembly.The New phytologist · 2025Article
- Evolutionary and structural aspects of Solanaceae RNases T2.Genetics and molecular biology · 2022Article
- Wolfberry genomes and the evolution of Lycium (Solanaceae).Communications biology · 2021Article
- Genome-wide identification and expression pattern analysis of the ribonuclease T2 family in Eucommia ulmoides.Scientific reports · 2021Article
- The Sardinian Bitter Honey: From Ancient Healing Use to Recent Findings.Antioxidants (Basel, Switzerland) · 2021Review
- Tomato T2 ribonuclease LE is involved in the response to pathogens.Molecular plant pathology · 2020Article
- Transcriptional Roadmap to Seasonal Variation in Wood Formation of Norway Spruce.Plant physiology · 2018Article
- Sex-Dependent Variation of Pumpkin (Frontiers in plant science · 2018Article
- Nectar Analysis Throughout the GenusFrontiers in plant science · 2018Article
- Lack of S-RNase-Based Gametophytic Self-Incompatibility in Orchids Suggests That This System Evolved after the Monocot-Eudicot Split.Frontiers in plant science · 2017Article
- Article
- Floral Nectary Morphology and Proteomic Analysis of Nectar of Liriodendron tulipifera Linn.Frontiers in plant science · 2016Article
- Using theories of sexual selection and sexual conflict to improve our understanding of plant ecology and evolution.AoB PLANTS · 2015Article
- NnSR1, a class III non-S-RNase constitutively expressed in styles, is induced in roots and stems under phosphate deficiency in Nicotiana alata.Annals of botany · 2013Article
- Microbial diversity in the floral nectar of seven Epipactis (Orchidaceae) species.MicrobiologyOpen · 2013Article
- Natural variation in floral nectar proteins of two Nicotiana attenuata accessions.BMC plant biology · 2013Article
- Xylan-degrading enzymes in male and female flower nectar of Cucurbita pepo.Annals of botany · 2011Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plants requiring an insect pollinator often produce nectar as a reward for the pollinator's visitations. This rich secretion needs mechanisms to inhibit microbial growth. In Nicotiana spp. nectar, anti-microbial activity is due to the production of hydrogen peroxide. In a close relative, Petunia hybrida, limited production of hydrogen peroxide was found; yet petunia nectar still has anti-bacterial properties, suggesting that a different mechanism may exist for this inhibition. The nectar proteins of petunia plants were compared with those of ornamental tobacco and significant differences were found in protein profiles and function between these two closely related species. Among those proteins, RNase activities unique to petunia nectar were identified. The genes corresponding to four RNase T2 proteins from Petunia hybrida that show unique expression patterns in different plant tissues were cloned. Two of these enzymes, RNase Phy3 and RNase Phy4 are unique among the T2 family and contain characteristics similar to both S- and S-like RNases. Analysis of amino acid patterns suggest that these proteins are an intermediate between S- and S-like RNases, and support the hypothesis that S-RNases evolved from defence RNases expressed in floral parts. This is the first report of RNase activities in nectar.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.