ArticlePlant physiology2016
Ovary Apical Abortion under Water Deficit Is Caused by Changes in Sequential Development of Ovaries and in Silk Growth Rate in Maize.
Article in Plant physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 115 citations in OpenAlex.
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- Physiological and molecular responses of individual and combined drought and heat stress on early anthesis of maize (Zea mays L.).Scientific reports · 2025Article
- Heat stress-induced sterility in oilseed crops: a focus on Brassica napus.Molecular biology reports · 2025Review
- 50 years of breeding to improve yield: how maize stands up to climate change.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Review
- Siblicide between fertilized and unfertilized ovaries within the maize ear.Communications biology · 2025Article
- A Moderate Water Deficit Induces Profound Changes in the Proteome of Developing Maize Ovaries.Biomolecules · 2024Article
- Pre-silking water deficit in maize induced kernel loss through impaired silk growth and ovary carbohydrate dynamics.Plant-environment interactions (Hoboken, N.J.) · 2024Article
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- Two decades of harnessing standing genetic variation for physiological traits to improve drought tolerance in maize.Journal of experimental botany · 2023Review
- Securing maize reproductive success under drought stress by harnessing COFrontiers in plant science · 2023Review
- The response of grain yield and ear differentiation related traits to nitrogen levels in maize varieties with different nitrogen efficiency.Scientific reports · 2022Article
- Earbox, an open tool for high-throughput measurement of the spatial organization of maize ears and inference of novel traits.Plant methods · 2022Article
- Physiological adaptive traits are a potential allele reservoir for maize genetic progress under challenging conditions.Nature communications · 2022Article
- Can we harness digital technologies and physiology to hasten genetic gain in US maize breeding?Plant physiology · 2022Article
- Reduced stem nonstructural carbohydrates caused by plant growth retardant had adverse effects on maize yield under low density.Frontiers in plant science · 2022Article
- Stubby or Slender? Ear Architecture Is Related to Drought Resistance in Maize.Frontiers in plant science · 2022Article
- Reproductive resilience but not root architecture underpins yield improvement under drought in maize.Journal of experimental botany · 2021Article
- Ppd-H1 integrates drought stress signals to control spike development and flowering time in barley.Journal of experimental botany · 2021Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Grain abortion allows the production of at least a few viable seeds under water deficit but causes major yield loss. It is maximum for water deficits occurring during flowering in maize (Zea mays). We have tested the hypothesis that abortion is linked to the differential development of ovary cohorts along the ear and to the timing of silk emergence. Ovary volume and silk growth were followed over 25 to 30 d under four levels of water deficit and in four hybrids in two experiments. A position-time model allowed characterizing the development of ovary cohorts and their silk emergence. Silk growth rate decreased in water deficit and stopped 2 to 3 d after first silk emergence, simultaneously for all ovary cohorts, versus 7 to 8 d in well-watered plants. Abortion rate in different treatments and positions on the ear was not associated with ovary growth rate. It was accounted for by the superposition of (1) the sequential emergence of silks originating from ovaries of different cohorts along the ear with (2) one event occurring on a single day, the simultaneous silk growth arrest. Abortion occurred in the youngest ovaries whose silks did not emerge 2 d before silk arrest. This mechanism accounted for more than 90% of drought-related abortion in our experiments. It resembles the control of abortion in a large range of species and inflorescence architectures. This finding has large consequences for breeding drought-tolerant maize and for modeling grain yields in water deficit.
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