Leaf structural traits mediating pre-existing physical innate resistance to sorghum aphid in sorghum under uninfested conditions

Triplett, Ethan; Hayes, Chad; Emendack, Yves; Longing, Scott; Monclova, Cecilia; Simpson, Catherine; Laza, Haydee E.

doi:10.1007/s00425-023-04194-0

Cited by 2 publications

(3 citation statements)

References 51 publications

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“…Lilies' stomatal length, stomatal width, and stomatal density of lilies were found to be significantly different (p < 0.05). Previous studies have shown that larger stomatal densities can alter leaf surface topography, leading to behavioral responses from insects [15]. Plant aphid-resistant varieties tend to have a smaller stomatal size and higher stomatal density [30].…”

Section: Leaf Stomatamentioning

confidence: 99%

“…It acts throughout their lifespan and consists of physical barriers and chemical barriers [4,10,13]. Research on physical barriers in plants currently focuses on factors such as leaf color, leaf trichomes, the wax content of the leaf surface, leaf structure, and so on [14,15]. For example, many phytophagous insects show a preference for a yellow-green color and have no tendency for a red color [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…For example, many phytophagous insects show a preference for a yellow-green color and have no tendency for a red color [16][17][18]. Resistant cultivars usually have longer and denser trichomes, as well as increased leaf cuticle thickness, palisade tissue thickness, and spongy tissue thickness [15,19,20].…”

Section: Introductionmentioning

confidence: 99%

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Aphid Resistance Evaluation and Constitutive Resistance Analysis of Eighteen Lilies

Shi,

Zhong,

Liang

et al. 2023

Insects

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Lilies (Lilium spp.) are famous bulb flowers worldwide, with high ornamental value. Aphid damage has seriously constrained the development of the lily industry. In this study, the aphid resistance of 16 lily cultivars and 2 wild lily species was characterized in the field and greenhouse. Leaf color parameters, stomatal density and size, thickness of leaf layers, leaf waxy content, and leaf water content were determined to explore the constitutive resistance of lilies. The results show that there was a significant positive correlation between the number of aphids in the field and in the greenhouse (p ≤ 0.05, r = 0.47). This indicated that the level of aphid infestation in both the field and the greenhouse is generally consistent across different types of lily plants. Among these 18 lilies, ‘Palazzo’, ‘Nymph’, ‘Cameleon’ and L. lancifolium were resistant to A. gossypii, while ‘Black Beauty’ and ‘Magnefique’ had poor resistance. The correlation analysis results showed that the number of aphids was negatively correlated with leaf abaxial surface a*, stomatal size, water content, and thickness of leaf palisade tissue and positively correlated with leaf distal axial surface b*, C*, and waxy content. Among them, the correlation between the number of aphids and the thickness of leaf palisade tissue reached a significant level (p ≤ 0.05, r = −0.521). This indicated that the thickness of the palisade tissue of lily leaves might be an important factor influencing the proliferation of aphids. This study not only screened out aphid-resistant lilies but also established a crucial research foundation for the targeted breeding and molecular breeding of lilies with aphid resistance.

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Section: Leaf Stomatamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aphid Resistance Evaluation and Constitutive Resistance Analysis of Eighteen Lilies

Shi,

Zhong,

Liang

et al. 2023

Insects

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Fortifying crop defenses: unraveling the molecular arsenal against aphids

Yang,

Zhang,

et al. 2024

HORTIC. ADV.

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Aphids cause enormous financial losses to various crop plants on a global scale. Moreover, aphids are vectors for many plant viral diseases that can further hasten crop yield losses. Aphids secrete saliva during feeding that contains effectors that can regulate plants' defense responses and their underlying mechanisms. Although much research has been undertaken to determine the mechanisms contributing to plant-aphid interactions, our understanding of defense mechanisms against aphids is insufficient. The presence of piercing-sucking mouthparts in aphids makes the identification of aphid resistance more challenging, hindering our understanding of the mechanisms of plant resistance to aphids. In this article, we consolidate and assess the evidence that is currently available on plant-aphid interactions, address the gaps in our understanding, and propose new research directions. As an outcome, we present an in-depth review of the molecular mechanisms of aphid resistance in crops from five perspectives: physical protection against aphids using volatile compounds, PAMP-triggered immunity (PTI), effector-triggered immunity (ETI), plant hormone signaling and the inheritance of induced resistance through epigenetics.

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Leaf structural traits mediating pre-existing physical innate resistance to sorghum aphid in sorghum under uninfested conditions

Cited by 2 publications

References 51 publications

Aphid Resistance Evaluation and Constitutive Resistance Analysis of Eighteen Lilies

Aphid Resistance Evaluation and Constitutive Resistance Analysis of Eighteen Lilies

Fortifying crop defenses: unraveling the molecular arsenal against aphids

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