An Interplay of Light and Smoke Compounds in Photoblastic Seeds

Bączek-Kwinta, R.

doi:10.3390/plants11131773

Cited by 6 publications

(4 citation statements)

References 60 publications

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“…Therefore, not only the smoke-specific molecules but also environmental factors characteristic of the local environment must be considered. The active concentration of KAR differs in different species [54].…”

Section: Common Physiological Mechanisms Of Smoke Compounds On Plant ...mentioning

confidence: 99%

The Impact of Post-Fire Smoke on Ecosystems All over the World

Zahed,

Kwinta

2023

Preprint

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Fire-related cues could alter vegetation community composition by promoting or excluding different types of plants. Smoke-derived compounds have been a hot topic in plant and crop physiology. There are some fire-prone areas in Australia, both Americas, some Mediterranean countries and regions with extensive prescribed or illegal burning like central European, which are subjected to a direct impact of fire (heat, minerals accumulation from the burning matter) and/or the indirect one (smoke) and undergo compositional and structural changes. This review first updates information about the effect of the compounds on plants' kingdoms and focuses on the research advances in the field of smoke compounds and attempts to gather and summarize the recent state of research and opinions on the role of smoke-derived compounds in plants' lives. We finish our review by discussing major research gaps, which include: Why plants respond to smoke chemicals? Is the response of seeds to smoke and smoke compounds an evolutionary-driven trait allowing plants to adapt to local environment?

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Section: Common Physiological Mechanisms Of Smoke Compounds On Plant ...mentioning

confidence: 99%

The Impact of Post-Fire Smoke on Ecosystems All over the World

Zahed,

Kwinta

2023

Preprint

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“…In positively photoblastic seeds, germination is promoted by white light, whereas in negatively phoblastic seeds, germination is inhibited [17]. It has been shown that chemicals from plantgenerated smoke (e.g., karrikins) can affect the germination of photoblastically sensitive seeds [50]. Seeds of many weeds require exposure to light for germination.…”

Section: Seed Germination: the Initiation Of A New Generationmentioning

confidence: 99%

Environmental Regulation of Weed Seed Dormancy and Germination

Qaderi

2023

Seeds

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Many weeds produce dormant seeds that are unable to complete germination under favourable conditions. There are two types of seed dormancy: primary dormancy (innate dormancy), in which seeds are in a dormant state upon release from the parent plant, and secondary dormancy (induced dormancy), in which dormancy develops in seeds through some experience after release from the parent plant. Mechanisms of seed dormancy are categorized as embryo dormancy and coat-imposed dormancy. In embryo dormancy, the control of dormancy resides within the embryo itself, and in coat-imposed dormancy, it is maintained by the structures enclosing the embryo. Many factors can influence seed dormancy during development and after dispersal; they can be abiotic, biotic, or a combination of both. Most weeds deposit a large number of seeds in the seed bank, which can be one of two types—transient or persistent. In the transient type, all viable seeds in the soil germinate or die within one year, and there is no carry-over until a new crop is deposited. In the persistent type, at least some seeds survive in the soil for more than one year and there is always some carry-over until a new crop is deposited. Some dormant seeds require after-ripening—changes in dry seeds that cause or improve germination. Nondormant, viable seeds can germinate if they encounter appropriate conditions. In the face of climate change, including global warming, some weeds produce a large proportion of nondormant seeds, which germinate shortly after dispersal, and a smaller, more transient seed bank. Further studies are required to explore this phenomenon.

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“…Therefore, not only must the smokespecific molecules be considered, but so must environmental factors characteristic of the local environment. It must be emphasized that the active concentration of KAR differs in smoke produced through the combustion of different plant species [58].…”

Section: The Impact Of Smoke and Its Isolated Compounds On Seed Germi...mentioning

confidence: 99%

The Impact of Post-Fire Smoke on Plant Communities: A Global Approach

Zahed,

Bączek-Kwinta

2023

Plants

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Smoke is one of the fire-related cues that can alter vegetation communities’ compositions, by promoting or excluding different plant species. For over 30 years, smoke-derived compounds have been a hot topic in plant and crop physiology. Research in this field was initiated in fire-prone areas in Australia, South Africa and some countries of both Americas, mostly with Mediterranean-type climates. Then, research extended to regions with moderate climates, like Central European countries; this was sometimes determined by the fact that in those regions, extensive prescribed or illegal burning (swailing) occurs. Hence, this review updates information about the effects of smoke compounds on plant kingdoms in different regions. It also focuses on research advances in the field of the physiological effects of smoke chemicals, mostly karrikins, and attempts to gather and summarize the current state of research and opinions on the roles of such compounds in plants’ lives. We finish our review by discussing major research gaps, which include issues such as why plants that occur in non-fire-prone areas respond to smoke chemicals. Have recent climate change and human activities increased the risk of wildfires, and how may these affect local plant communities through physiologically active smoke compounds? Is the response of seeds to smoke and smoke compounds an evolutionarily driven trait that allows plants to adapt to the environment? What can we learn by examining post-fire smoke on a large scale?

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An Interplay of Light and Smoke Compounds in Photoblastic Seeds

Cited by 6 publications

References 60 publications

The Impact of Post-Fire Smoke on Ecosystems All over the World

The Impact of Post-Fire Smoke on Ecosystems All over the World

Environmental Regulation of Weed Seed Dormancy and Germination

The Impact of Post-Fire Smoke on Plant Communities: A Global Approach

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