The role of temperature in the seed germination of two species of theSolanum nigrumcomplex

Abstract: Fertilizer formulation alternatives that avoid unnecessary losses and environmental impacts are being investigated in agricultural management. Seed priming with nanofertilizers prior to planting, reduces concerns about non-target dispersion; however, priming formulations and concentrations must be carefully selected to avoid undesired effects. Here, seed germination and seedling development were evaluated after seed priming with CuO nanoparticles (NPs), CuO bulk and CuCl2. The seeds were immersed in priming solutions of 0, 20, 40, 80 and 160 mg.L−1 Cu for the three Cu sources. Following 8 hours priming, the seeds were evaluated for germination and vigor (first germination count). Root and shoot lengths were measured as well as shoot and root dry biomass. The copper NP did not show any toxic effects on corn seed germination and growth, and also promoted higher biomass when compared to the other Cu sources. On the other hand, CuCl2 primed seeds exhibited Cu-toxicity in roots and shoots for all concentrations tested. Bulk Cu priming results indicated the better role of NPs size effects. These findings support NP-seed priming as an alternative to delivery of essential micronutrients, such as copper, to corn seedlings.

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The signalling role of ROS in the regulation of seed germination and dormancy

Biochemical Journal ◽

10.1042/bcj20190159 ◽

2019 ◽

Vol 476 (20) ◽

pp. 3019-3032 ◽

Cited By ~ 25

Author(s):

Christophe Bailly

Keyword(s):

Seed Germination ◽

Oxygen Species ◽

Direct Oxidation ◽

Cellular Events ◽

Seed Physiology ◽

Spatiotemporal Regulation ◽

Wide Range ◽

Living Organisms ◽

Hormone Signalling

Abstract Reactive oxygen species (ROS) are versatile compounds which can have toxic or signalling effects in a wide range living organisms, including seeds. They have been reported to play a pivotal role in the regulation of seed germination and dormancy but their mechanisms of action are still far from being fully understood. In this review, we sum-up the major findings that have been carried out this last decade in this field of research and which altogether shed a new light on the signalling roles of ROS in seed physiology. ROS participate in dormancy release during seed dry storage through the direct oxidation of a subset of biomolecules. During seed imbibition, the controlled generation of ROS is involved in the perception and transduction of environmental conditions that control germination. When these conditions are permissive for germination, ROS levels are maintained at a level which triggers cellular events associated with germination, such as hormone signalling. Here we propose that the spatiotemporal regulation of ROS production acts in concert with hormone signalling to regulate the cellular events involved in cell expansion associated with germination.

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Role of seed germination in adaptation and reproductive isolation in Arabidopsis lyrata

Molecular Ecology ◽

10.1111/mec.14135 ◽

2017 ◽

Vol 26 (13) ◽

pp. 3484-3496 ◽

Cited By ~ 18

Author(s):

Tuomas Hämälä ◽

Tiina M. Mattila ◽

Päivi H. Leinonen ◽

Helmi Kuittinen ◽

Outi Savolainen

Keyword(s):

Seed Germination ◽

Reproductive Isolation ◽

Arabidopsis Lyrata

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Особенности концентрационного влияния гидротермального нанокремнезема при предпосевной обработке семян растений на показатели биомассы и высоты ростков при проращивании в темноте

Nanoindustry Russia ◽

10.22184/1993-8578.2021.14.1.44.60 ◽

2021 ◽

Vol 14 (1) ◽

pp. 44-60

Author(s):

В.Н. Зеленков ◽

В.В. Латушкин ◽

В.В. Потапов ◽

В.В. Карпачев ◽

В.М. Косолапов ◽

...

Keyword(s):

Seed Germination ◽

Essential Role ◽

Plant Response ◽

Epigenetic Factors ◽

Agricultural Plants

В работе представлены результаты скрининговых исследований 14 сельскохозяйственных растений с отличающимися биологическими и хозяйственно-полезными свойствами (17 генотипов, включая разные виды, сорта и гибриды) по оценке влияния гидротермального нанокремнезема на биомассу и высоту ростков при темновом проращивании. Выявлено четыре основных типа отклика (реакции) растений в изученном диапазоне концентраций (0,05; 0,01; 0,005; 0,001 и 0,0005%). Данные закономерности характерны как для показателя биомассы ростков, так и их высоты. Отмечена существенная роль генетического и эпигенетического факторов в формировании отзывчивости растений на применение гидротермального нанокремнезема при проращивании семян. The research presents the results of screening studies of 14 agricultural plants with different biological and useful economic properties (17 genotypes, including different species, varieties, and hybrids) to assess the effect of hydrothermal nanosilica on biomass and sprout height in the dark growth germination. Four main types of plant response were revealed in the studied concentration range (0.05, 0.01, 0.005, 0.001 and 0.0005%). These dependencies are characteristic both of the biomass sprout indicator and of the sprout height. The essential role of genetic and epigenetic factors in the formation of the plant response when using hydrothermal nanosilica in seed germination is pointed out.

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The role of strigolactones in host specificity ofOrobancheandPhelipancheseed germination

Seed Science Research ◽

10.1017/s0960258510000371 ◽

2010 ◽

Vol 21 (1) ◽

pp. 55-61 ◽

Cited By ~ 58

Author(s):

Mónica Fernández-Aparicio ◽

Koichi Yoneyama ◽

Diego Rubiales

Keyword(s):

Seed Germination ◽

Host Specificity ◽

Mycorrhizal Fungi ◽

Arbuscular Mycorrhizal ◽

Parasitic Plants ◽

Parasitic Weed ◽

Low Concentrations ◽

Weedy Species ◽

Germination Requirements

AbstractStrigolactones are apocarotenoids regulating shoot branching. They are also known to be exuded by plant roots at very low concentrations, stimulating hyphal branching of arbuscular mycorrhizal fungi and germination of root parasitic weed seeds. We show that strigolactones play a major role in host specificity ofOrobancheandPhelipanche(the broomrapes) seed germination. This observation confirms that host-derived germination stimulants are an important component determining the host specificity of these parasitic plants. Weedy broomrape species were less specialized in germination requirements than the non-weedy species except forO. cumanaandO. foetidavar.broteri. Similar results were obtained with the root exudates. Some species, such asP. aegyptiacaandO. minor, showed a broad spectrum of host specificity in terms of seed germination, which was stimulated by exudates from the majority of species tested, whereas others, such asO. cumana,O. hederaeandO. densiflora, were highly specific. Some species, such asO. minor,P. aegyptiacaandP. nana, were responsive to the three strigolactones studied, whereas others were induced by only one of them, or did not respond to them at all. The synthetic strigolactone analogue GR24, generally used as a standard for germination tests, was not effective on someOrobancheandPhelipanchespecies. Seeds of some species that did not respond to GR24 were induced to germinate in the presence of fabacyl acetate or strigol, confirming the role of strigolactones in host specificity.

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