Seed germination responses to some environmental factors in the seagrass Zostera capricorni from eastern Australia

Brenchley, Jennie L.; Probert, R. J.

doi:10.1016/s0304-3770(98)00089-8

Cited by 114 publications

(89 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although our review has highlighted the lack of this basic work for many seagrass species (Table 2), it also suggests that previous work be re-examined in light of recent research suggesting that factors intrinsic to sediment~, especially sediment oxygen levels (redox potentials), may be the most important ones influencing germination processes for some species (Churchill 1983, Moore et al 1993, Brenchley & Probert 1998.…”

Section: Seed Germination Research: Future Directionsmentioning

confidence: 99%

“…Research on maintaining seagrass seed dormancy has been restricted mainly to studies of the retention of seeds for artificial seed reserves (e.g. McMillan 1991, Brenchley & Probert 1998.…”

Section: Dormancymentioning

confidence: 99%

“…Factors critical to this process can be seed-specific, so the intraspecific range for each factor may span several orders of magnitude (Hilhorst & Toorop 1997). Thus, exact mechanisms are often considered nebulous as Moore et al 1993, Brenchley & Probert 1998, as critical cues influencing germination processes (Appendix 1). However, no work has been conducted on the precise physiological mechanisms leading to seagrass seed germination.…”

Section: Seed Germinationmentioning

confidence: 99%

“…More importantly, it is critical that all seagrass seed germination studies identify a standard 'definition' of germination (e.g. Brenchley & Probert 1998) for comparison to other work, including not just rupture of the seed coat but' emergence and growth of the cotyledon (Churchill 1983, Brenchley & Probert 1998.…”

Section: Seed Germinationmentioning

confidence: 99%

“…Oxygen levels or some other property of sediments may be the most important factor affecting seed germination (Kawasaki 1993, Moore et al 1993, Brenchley & Probert 1998. Moore et al (1993) showed faster germination of Zostera marina seeds held in both sediments with no oxygen (as measured by redox potential) and vials with water where oxygen was removed compared to seeds held in similar vials with oxygen.…”

Section: Seed Germinationmentioning

confidence: 99%

See 4 more Smart Citations

A review of issues in seagrass seed dormancy and germination:implications for conservation and restoration

Orth¹,

Harwell²,

Bailey³

et al. 2000

Mar. Ecol. Prog. Ser.

183

116

View full text Add to dashboard Cite

Seagrasses have received considerable attention over the past 2 decades because of the multiple ecological roles they play in estuarine and coastal ecosystems and concerns over worldwide losses of seagrass habitat due to direct and indirect human impacts. Restoration and conservation efforts are underway in some areas of the world, but progress may be limited by the paucity of information on the role of seeds in bed dynamics. Although flowering occurs in most of the 58 seagrass species, seed germination data exist for only 19 of the 42 species that have some period of dormancy, with only 93 published references to field and/or laboratory studies. This review addresses critical issues in conservation and restoration of seagrasses involving seed dormancy (e.g. environmental vs physiological), existence and type of seed bank (transient or persistent), and factors influencing seed germination (e.g. salinity, temperature, light). Results of many earlier published studies relating seed germination to various environmental factors may need re-examination given more recent published data which show a confounding influence of oxygen level on the germination process. We highlight the importance of conducting ecologically meaningful germination studies, including germination experiments conducted in sediments. We also identify questions for future research that may figure prominently in landscape level questions regarding protected marine or estuarine reserves, habitat fragmentation, and restoration.

show abstract

Section: Seed Germination Research: Future Directionsmentioning

confidence: 99%

“…Research on maintaining seagrass seed dormancy has been restricted mainly to studies of the retention of seeds for artificial seed reserves (e.g. McMillan 1991, Brenchley & Probert 1998.…”

Section: Dormancymentioning

confidence: 99%

Section: Seed Germinationmentioning

confidence: 99%

Section: Seed Germinationmentioning

confidence: 99%

Section: Seed Germinationmentioning

confidence: 99%

See 3 more Smart Citations

A review of issues in seagrass seed dormancy and germination:implications for conservation and restoration

Orth¹,

Harwell²,

Bailey³

et al. 2000

Mar. Ecol. Prog. Ser.

183

116

View full text Add to dashboard Cite

show abstract

Effects of salinity on sprouting and growth of three submerged macrophytes

Xia

Zhu

et al. 2020

Ecohydrology

View full text Add to dashboard Cite

Many freshwater ecosystems are facing salinity stress, but limited information is available about its effects on submerged macrophytes. Here, we assessed the effects of salinity on sprouting and growth of three submerged macrophytes-Potamogeton crispus, Hydrilla verticillata and Myriophyllum spicatum. We conducted experiments in the lab and the outdoor platform to test for the sprouting and growth responses of selected macrophytes to a gradient of salinity (0.32-10,000 mg Cl − L −1). Sprouting rate, biomass and other related physiological indices were measured in all treatments. We found that lower salinity (100 mg Cl − L −1) increased the turion sprouting rate, and higher salinity (greater than or equal to 5,000 mg Cl − L −1) significantly inhibited the sprouting of P. crispus turions. M. spicatum appeared to have higher tolerance of salinity than H. verticillata. The optimum salinity for the growth of H. verticillata and M. spicatum was 500-1,000 mg Cl − L −1 and 100-500 mg Cl − L −1 , respectively. Activity of superoxide dismutase (SOD) and production of malondialdehyde (MDA) differed in salinity levels between submerged macrophytes, and higher SOD activity was observed in M. spicatum. This study helped clarify how physiological response mechanisms affecting sprouting and growth of submerged macrophytes are inhibited under high salinity and suggested that SOD plays an important role in the resistance to oxidative stress induced by salinity.

show abstract

Chemical seed priming alleviates salinity stress and improves Sulla carnosa germination in the saline depression of Tunisia

2021

View full text Add to dashboard Cite

In the saline depressions (Sebkhas) of Tunisia, Sulla carnosa expresses anarchic distribution, sometimes in association with halophytes sometimes individually. In order to explain this distribution, we investigated the effects of salinity on seed germination, the osmotic and toxic limiting factors, and the importance of some stimulating agents (priming agents) in the improvement of the tolerance to salinity at the germinating stage. A study was conducted on seeds harvested from the natural biotope Sebkha d'El Kelbia (35°50′34″N, 10°16′18″E), and an increasing concentration of NaCl (0, 5, 10, 15, and 20 g L−1) was applied. Some priming agents were used to propose efficient, rapid, and low‐cost tools to improve the seed germination and tolerance of Sulla carnosa (Desf.) in saline depression. Salinity stress significantly decreased germination capacity and rate and delayed its initiation and maximum. Until 15‐g L−1 NaCl, the most limiting factor of seed germination is the osmotic effect. At 20‐g L−1 NaCl, the toxic effect dominates, and germination is irreversibly inhibited. Some priming agents have shown their efficiency in improving the germination capacity at 10‐g L−1 NaCl and conferring a salt tolerance of up to 15‐g L−1 NaCl.

show abstract

Seed germination responses to some environmental factors in the seagrass Zostera capricorni from eastern Australia

Cited by 114 publications

References 19 publications

A review of issues in seagrass seed dormancy and germination:implications for conservation and restoration

A review of issues in seagrass seed dormancy and germination:implications for conservation and restoration

Effects of salinity on sprouting and growth of three submerged macrophytes

Chemical seed priming alleviates salinity stress and improves Sulla carnosa germination in the saline depression of Tunisia

Contact Info

Product

Resources

About