Quantifying dynamic resource allocation illuminates foraging strategy in Phanerochaete velutina

Tlalka, M.; Bebber, Daniel P.; Darrah, P. R.; Watkinson, Sarah C.; Fricker, Mark D.

doi:10.1016/j.fgb.2008.03.015

Cited by 25 publications

(30 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within this overall pattern, the network architecture is further modified in response to other fungi or grazing by collembola (Rotheray et al, 2008). Dynamic imaging of nutrient transport, visualised using radiolabel movement and photon-counting scintillation imaging, has shown that N-resources are preferentially allocated to C-rich sinks (Tlalka et al, 2008a), and that there is a strong pulsatile component to transport Tlalka et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…However, all these previous transport and network studies with P. velutina have been conducted in small (12 Â 12 cm or 25 Â 25 cm) microcosms from agar or wood block inocula that have been colonised by mycelia growing on rich media Fricker et al, 2007b;Rotheray et al, 2008;Tlalka et al, 2007Tlalka et al, , 2008a. Under these conditions, the initial dense, radial symmetric growth phase tends to reflect the mycelial response to high nutrients that are sequestered by mycelium during the initial colonisation phase (Tlalka et al, 2008a).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fungal network responses to grazing

Boddy

Wood

Redman

et al. 2010

Fungal Genetics and Biology

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fungal network responses to grazing

Boddy

Wood

Redman

et al. 2010

Fungal Genetics and Biology

View full text Add to dashboard Cite

“…We have demonstrated the practicability of the framework by applying it to a class of biologically inspired models, which produce qualitatively similar canalised flow patterns to those observed in real woodland fungi [15,16,17,19]. This suggests that for organisms that have to adapt their morphology to a variable environment, function may play a crucial role in determining structure.…”

Section: Concluding Remarks and Discussionmentioning

confidence: 67%

Network Automata: Coupling Structure and Function in Dynamic Networks

Smith

Onnela

Lee

et al. 2011

Advs. Complex Syst.

View full text Add to dashboard Cite

We introduce Network Automata, a framework which couples the topological evolution of a network to its structure. It is useful for dealing with networks in which the topology evolves according to some specified microscopic rules and, simultaneously, there is a dynamic process taking place on the network that both depends on its structure but is also capable of modifying it. It is a generic framework for modeling systems in which network structure, dynamics, and function are interrelated. At the practical level, this framework allows for easy implementation of the microscopic rules involved in such systems. To demonstrate the approach, we develop a class of simple biologically inspired models of fungal growth.

show abstract

“…In persistent basidiomycete species, such as P. velutina, rapid pulsatile fluxes operate both acropetally and basipetally between the inoculum and added resources (69,71,72). In addition, unlike in N. crassa, rapid shifts in nutrient distribution occurred in P. velutina in response to new resource additions (70) and even to long-distance translocation between different individuals (21). These differences in colony transport may be primarily due to the formation of cords in some basidiomycete species, such as P. velutina or Armillaria mellea, that facilitate retrograde movement (70).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, unlike in N. crassa, rapid shifts in nutrient distribution occurred in P. velutina in response to new resource additions (70) and even to long-distance translocation between different individuals (21). These differences in colony transport may be primarily due to the formation of cords in some basidiomycete species, such as P. velutina or Armillaria mellea, that facilitate retrograde movement (70). Indeed, some degree of hyphal differentiation and tissue organization may be essential to allow more complex patterns of nutrient distribution, such as retrograde translocation and strategic reallocation of nutrients from sources to sinks.…”

Section: Discussionmentioning

confidence: 99%

Physiological Significance of Network Organization in Fungi

et al. 2012

View full text Add to dashboard Cite

bThe evolution of multicellularity has occurred in diverse lineages and in multiple ways among eukaryotic species. For plants and fungi, multicellular forms are derived from ancestors that failed to separate following cell division, thus retaining cytoplasmic continuity between the daughter cells. In networked organisms, such as filamentous fungi, cytoplasmic continuity facilitates the long-distance transport of resources without the elaboration of a separate vascular system. Nutrient translocation in fungi is essential for nutrient cycling in ecosystems, mycorrhizal symbioses, virulence, and substrate utilization. It has been proposed that an interconnected mycelial network influences resource translocation, but the theory has not been empirically tested. Here we show, by using mutants that disrupt network formation in Neurospora crassa (⌬so mutant, no fusion; ⌬Prm-1 mutant, ϳ50% fusion), that the translocation of labeled nutrients is adversely affected in homogeneous environments and is even more severely impacted in heterogeneous environments. We also show that the ability to share resources and genetic exchange between colonies (via hyphal fusion) is very limited in mature colonies, in contrast to in young colonies and germlings that readily share nutrients and genetic resources. The differences in genetic/resource sharing between young and mature colonies were associated with variations in colony architecture (hyphal differentiation/diameters, branching patterns, and angles). Thus, the ability to share resources and genetic material between colonies is developmentally regulated and is a function of the age of a colony. This study highlights the necessity of hyphal fusion for efficient nutrient translocation within an N. crassa colony but also shows that established N. crassa colonies do not share resources in a significant manner.T he transition from unicellular to multicellular organisms has occurred on multiple occasions in diverse lineages over considerable evolutionary time (28,38,68). While an initial adaptive advantage may have accrued simply from being larger, multicellular organisms subsequently developed increased differentiation and specialization, leading to a more efficient division of labor (8). Multicellularity may have arisen by either the aggregation of individual cells to form a colony or by the failure of daughter cells to separate following division. Comparisons of unicellular animals and their multicellular relatives support the view that multicellularity is associated with expansion of the genetic families involved in cell adhesion, cell-cell signaling, and cell differentiation (63). In contrast, multicellular plants and fungi are derived from ancestors that failed to separate following cell division, providing an opportunity to retain cytoplasmic continuity between daughter cells (75). Thus, plant cells are linked by tissue-specific patterns of plasmodesmata (41, 47), while fungi are either coenocytic or have perforated septa that allow intercompartmental exchange (40).In ascomycete an...

show abstract

Quantifying dynamic resource allocation illuminates foraging strategy in Phanerochaete velutina

Cited by 25 publications

References 39 publications

Fungal network responses to grazing

Fungal network responses to grazing

Network Automata: Coupling Structure and Function in Dynamic Networks

Physiological Significance of Network Organization in Fungi

Contact Info

Product

Resources

About