Seeding Resilient Restoration: An Indicator System for the Analysis of Tree Seed Systems

Atkinson, Rachel; Thomas, Evert; Roscioli, Federico; Cornelius, J.P.; Zamora‐Cristales, René; Chuaire, María Franco; Alcázar, Carolina; Mesén, Francisco; Lopez, Hariet; Ipinza, Roberto; Donoso, Pablo J.; Gallo, Leonardo; Nieto, Víctor Manuel García; Ugarte, Julio; Sáenz‐Romero, Cuauhtémoc; Fremout, Tobias; Jalonen, Riina; Gaisberger, Hannes; Vinceti, Barbara; Valette, Michel; Bosshard, E.; Ekué, Marius; Guerra, Gabriela Wiederkehr; Kettle, Chris J.

doi:10.3390/d13080367

Cited by 23 publications

(33 citation statements)

References 33 publications

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“…The use of high-quality planting material guarantees the success of seed-based restoration programs [77], and selection of forest restoration material with priority areas for sourcing seeds can be supported by provenance comparisons reported in our studies (Figure 2) because oxidation processes reported in stored seeds are transferred to seedlings [27]. Provenance selection determines the growth performance of Q. robur [78]; in this context, seeds of Parczew provenance quickly losing vitality should not be considered for long-term storage and reforestation purposes.…”

Section: Discussionmentioning

confidence: 99%

Thermotherapy and Storage Temperature Manipulations Limit the Production of Reactive Oxygen Species in Stored Pedunculate Oak Acorns

Kalemba¹,

Wawrzyniak²,

Suszka³

et al. 2021

Forests

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For many species, seed storage protocols are still being improved to provide viable seeds of the highest quality. Seed storage is extremely problematic for short-lived seeds categorized as recalcitrant, including pedunculate oak (Quercus robur L.), for which the optimal seed storage protocol involves a temperature of –3 °C and 40% acorn moisture content recommendations. The sensitivity of pedunculated oak seeds to temperature manipulations under preparation for long-term storage has been poorly investigated, particularly in terms of the production of reactive oxygen species (ROS), which are assumed to be determinants of seed longevity. Thermotherapy, the pathogen elimination procedure, did not increase the level of three types of ROS: hydrogen peroxide (H2O2), superoxide anion radical and hydroxyl radical (•OH). The temporal heat stress of thermotherapy resulted in slightly reduced levels of H2O2, indicating activation of the antioxidant systems in acorn preparation for storage. The effect of constant storage temperatures (−3, −5, −7 °C) and their combinations (−3 → −5 °C or −3 → −5 →−7 °C) on ROS levels and seed viability was investigated in three provenances. The highest ROS levels were detected in acorns stored at −7 °C, whereas three-step cold acclimation was beneficial for reducing ROS levels. Interestingly, the levels of H2O2 were not affected by temperature in thermotherapized acorns. In contrast, decreasing storage temperature caused a linear increase in •OH levels in all provenances. The effect of heat stress and cold stress on ROS levels in relation to long-term seed storage of pedunculate oak is discussed here in relation to the seed viability evidenced via germination rates, seedling emergence and electrolyte leakage. Thermotherapy and cold acclimation of acorns can improve their viability after storage by decreasing ROS levels.

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Section: Discussionmentioning

confidence: 99%

Thermotherapy and Storage Temperature Manipulations Limit the Production of Reactive Oxygen Species in Stored Pedunculate Oak Acorns

Kalemba¹,

Wawrzyniak²,

Suszka³

et al. 2021

Forests

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“…Our assessment reveals that the frameworks underlying the national tree seed systems vary between countries, likely as a result of geographical, historical and cultural differences [22,54]. Some of the strengths and weaknesses identified in this study can be directly associated with these underlying frameworks.…”

Section: Discussionmentioning

confidence: 81%

“…Further research is needed to understand how informal tree seed systems operate under different policy and socio-economic contexts and how operators can be supported to participate in formal seed markets. We therefore recommend adding a new indicator to the indicator set proposed by Atkinson et al [54], addressing the involvement of local communities in seed production and the existence of related incentives and extension to support their role.…”

Section: Discussionmentioning

confidence: 99%

“…To assess the strengths and weaknesses of the national tree seed systems we used an indicator system developed by Atkinson et al [54] which the authors applied to analyse seed systems for FLR in seven Latin American countries. The indicator system includes five interlinked components determining a well-functioning seed system, namely: i.…”

Section: Analysis Of the Tree Seed Systemsmentioning

confidence: 99%

“…It should be noted that informal seed systems and unregistered temporary nurseries could not be covered in detail in the national level assessment, due to their localised and often informal nature. Additional methodological details, including the approach for scoring the indicators using a questionnaire, can be found in the Supplementary Materials Tables S1 and S2, and are further described in Atkinson et al [26,54].…”

Section: Analysis Of the Tree Seed Systemsmentioning

confidence: 99%

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Are Tree Seed Systems for Forest Landscape Restoration Fit for Purpose? An Analysis of Four Asian Countries

Bosshard

Jalonen²,

Kanchanarak

et al. 2021

Diversity

Self Cite

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High-quality, suitably adapted tree seed at volume is a key component for the implementation and long-term success of forest landscape restoration (FLR). We analysed the tree seed systems in four Asian countries—the Philippines, Indonesia, Malaysia and India—which have committed to restore in total over 47.5 million hectares of degraded lands by 2030. We assessed the national seed systems using an established indicator framework, literature review and expert surveys and interviews. Additionally, we surveyed 61 FLR practitioners about their challenges in acquiring seed to understand how the strengths and weaknesses identified at the national level were reflected in FLR projects on the ground. Identified key constraints common to the studied countries are (i) a mismatch between the growing demand for priority native species and the limited seed supply in terms of quantity and quality, (ii) lack of effective quality control for seed of native species and (iii) lack of information about the effects of climate change on native species to guide species selection and seed sourcing and to improve the resilience of restored ecosystems. We discuss options to strengthen seed systems for native tree species both in terms of quality and volume to enable them to effectively respond to the national FLR commitments and make recommendations on promising technical solutions.

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Selection of Genipa americana L. seed trees by genetic divergence in fruit, seeds, and seedlings

Cola,

da Penha Moreira Gonçalves,

Maciel

et al. 2023

Genet Resour Crop Evol

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Seeding Resilient Restoration: An Indicator System for the Analysis of Tree Seed Systems

Cited by 23 publications

References 33 publications

Thermotherapy and Storage Temperature Manipulations Limit the Production of Reactive Oxygen Species in Stored Pedunculate Oak Acorns

Thermotherapy and Storage Temperature Manipulations Limit the Production of Reactive Oxygen Species in Stored Pedunculate Oak Acorns

Are Tree Seed Systems for Forest Landscape Restoration Fit for Purpose? An Analysis of Four Asian Countries

Selection of Genipa americana L. seed trees by genetic divergence in fruit, seeds, and seedlings

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