Adaptive strategies of Scots pine under shade: increase in lignin synthesis and ecotypic variation in defence-related gene expression. Ranade, S. S., Seipel, G., Gorzsás, A., & García-Gil, M. R. Physiologia Plantarum, 2022-10:e13792, September, 2022.
Adaptive strategies of Scots pine under shade: increase in lignin synthesis and ecotypic variation in defence-related gene expression [link]Paper  doi  abstract   bibtex   
Shade is a stressful condition for plants characterized by low Red:Far-Red (R:FR) ratio. The northern latitudes in Sweden daily receive more hours of FR-enriched light (twilight) or shade-like conditions compared to southern forests during the growth season. Scots pine (Pinus sylvestris L.) is a shade-intolerant species. Yet, it is well adapted to this latitudinal variation in light, which is evident by a northward increase in FR requirement to maintain growth. Shade adversely affects plant growth; it makes the plant weak and, therefore, susceptible to pathogen attack. Lignin is involved in plant protection against pathogen invasion mainly by forming a physical barrier. We studied lignin synthesis and expression of defence-related genes (growth-defence trade-offs) under a low R:FR (shade) ratio in Scots pine. A higher number of immunity/defence-related genes were up-regulated in response to shade in northern populations compared to southern ones, which can be viewed as a local adaptation to light quality for optimal growth and survival. Light quality regulates lignin metabolism; light stimulates lignin synthesis, while shade causes a decrease in lignin synthesis in most angiosperms. In contrast, Scots pine shows an increase in lignin synthesis supported by the higher expression of a few key genes in the lignin biosynthetic pathway, a novel finding reported by our study. These findings can be applied to future breeding strategies in forestry to produce disease-resilient trees.
@article{ranade_adaptive_2022,
	title = {Adaptive strategies of {Scots} pine under shade: increase in lignin synthesis and ecotypic variation in defence-related gene expression},
	volume = {2022-10},
	issn = {1399-3054},
	shorttitle = {Adaptive strategies of {Scots} pine under shade},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/ppl.13792},
	doi = {10.1111/ppl.13792},
	abstract = {Shade is a stressful condition for plants characterized by low Red:Far-Red (R:FR) ratio. The northern latitudes in Sweden daily receive more hours of FR-enriched light (twilight) or shade-like conditions compared to southern forests during the growth season. Scots pine (Pinus sylvestris L.) is a shade-intolerant species. Yet, it is well adapted to this latitudinal variation in light, which is evident by a northward increase in FR requirement to maintain growth. Shade adversely affects plant growth; it makes the plant weak and, therefore, susceptible to pathogen attack. Lignin is involved in plant protection against pathogen invasion mainly by forming a physical barrier. We studied lignin synthesis and expression of defence-related genes (growth-defence trade-offs) under a low R:FR (shade) ratio in Scots pine. A higher number of immunity/defence-related genes were up-regulated in response to shade in northern populations compared to southern ones, which can be viewed as a local adaptation to light quality for optimal growth and survival. Light quality regulates lignin metabolism; light stimulates lignin synthesis, while shade causes a decrease in lignin synthesis in most angiosperms. In contrast, Scots pine shows an increase in lignin synthesis supported by the higher expression of a few key genes in the lignin biosynthetic pathway, a novel finding reported by our study. These findings can be applied to future breeding strategies in forestry to produce disease-resilient trees.},
	language = {en},
	urldate = {2022-10-06},
	journal = {Physiologia Plantarum},
	author = {Ranade, Sonali Sachin and Seipel, George and Gorzsás, András and García-Gil, María Rosario},
	month = sep,
	year = {2022},
	pages = {e13792},
}

Downloads: 0