In e na ional Jou nal o Eme ging Resea ch in Science, Enginee ing, and Managemen
Vol. 1, Issue 1, pp.10-14, July 2025.
www.ije sem.com eISSN – 3107-9075
IJERSEM@2025 h ps://doi.o g/10.58482/ije sem. 1i1.2 10
E ec o Mic og a i y Simula ion on Plan
Ge mina ion
1J Venka agi i, 2Z. Chai anya
1Associa e P o esso , Depa men o CSE, Ramaiah Uni e si y o Applied Sciences, Bengalu u, Ka na aka, India.
enka agi i.cs.e @ms uas.ac.in
2Assis an P o esso , Depa men o ECE, Gee hanjali Ins i u e o Science and Technology, Nello e, India.
zonna adachai [email protected]
Abs ac : The explo a ion o plan g ow h unde mic og a i y condi ions has ga ne ed signi ican a en ion due o i s implica ions o long- e m
space missions and ex a e es ial ag icul u e. Ge mina ion, being he i s c i ical s age in a plan ’s li e cycle, is especially sensi i e o
g a i a ional cues. This pape in es iga es he e ec s o simula ed mic og a i y on plan ge mina ion by analyzing ou comes om a ious
expe imen al se ups such as clinos a s, andom posi ioning machines, and space ligh missions. The li e a u e e eals a ied esponses depending
on plan species and expe imen al condi ions, including al e ed oo and shoo o ien a ion, changes in ho mone le els such as indole-3-ace ic
acid and gibbe ellic acid, and modi ica ions in cellula s uc u es. S udies also highligh he adap abili y o ce ain plan s, such as A abidopsis
haliana, Vigna adia a, and whea g ass, unde mic og a i y, wi h some showing enhanced biochemical p ope ies. Fu he mo e, ecen ad ances
in simula ion p o ocols and ha dwa e minia u iza ion ha e enabled mo e p ecise and au onomous ge mina ion s udies in mic og a i y
en i onmen s. These insigh s a e c ucial o op imizing plan cul i a ion sys ems in space and unde s anding undamen al biological p ocesses
in luenced by g a i y.
Keywo ds: A abidopsis, Clinos a , Ge mina ion, Mic og a i y, Space Ag icul u e.
1 INTRODUCTION
The abili y o g ow plan s in space is essen ial o he success o long-du a ion manned missions and he es ablishmen o
sus ainable ex a e es ial habi a s. Plan s no only p o ide ood and oxygen bu also con ibu e o psychological well-being and
ca bon dioxide emo al o as onau s. Howe e , g a i y plays a c ucial ole in a ious s ages o plan de elopmen , pa icula ly
du ing ge mina ion. On Ea h, g a i y di ec s oo g ow h downwa d (posi i e g a i opism) and shoo g ow h upwa d (nega i e
g a i opism), guided by s a oli hs in plan cells. In mic og a i y en i onmen s, such as hose encoun e ed aboa d he In e na ional
Space S a ion (ISS) o simula ed using g ound-based pla o ms, hese cues a e al e ed o absen , a ec ing no mal plan
de elopmen .
Recen ad ancemen s in space li e sciences ha e demons a ed ha while some plan species can success ully ge mina e and
comple e hei li e cycle unde eal o simula ed mic og a i y, no able physiological, cellula , and molecula changes occu . Fo
ins ance, he success ul cul i a ion o A abidopsis haliana and ice aboa d he Chinese Space S a ion (CSS) using he Gene al
Biological Cul u e Module (GBCM) demons a ed ha highe plan s can comple e a ull seed- o-seed cycle in space [1]. Simula ed
mic og a i y s udies on Ea h using clinos a s and andom posi ioning machines ha e e ealed al e a ions in oo and shoo
mo phology, ho mone dis ibu ion, and biochemical composi ion du ing ea ly plan de elopmen [2], [3], [4].
Mo eo e , expe imen s wi h whea g ass ha e shown ha simula ed mic og a i y can enhance oo g ow h and bioac i e
compound con en , po en ially imp o ing i s he apeu ic p ope ies [2]. In con as , changes in wa e up ake, cell wall emodeling,
and s oma al egula ion unde mic og a i y ha e posed challenges o consis en ge mina ion and g ow h [5], [6]. Unde s anding
hese physiological esponses is essen ial o he de elopmen o eliable bio egene a i e li e suppo sys ems (BLSS) o u u e
space missions.
This pape aims o examine he e ec s o mic og a i y simula ion on seed ge mina ion, d awing om a comp ehensi e e iew
o ecen li e a u e. By analyzing plan esponses a di e en biological le els unde eal and simula ed mic og a i y, we seek o
iden i y c i ical ac o s in luencing success ul ge mina ion and p opose conside a ions o u u e space-based ag icul u e sys ems.
2 LITERATURE REVIEW
Nume ous s udies ha e explo ed plan esponses o mic og a i y, bo h eal and simula ed, wi h pa icula emphasis on seed
ge mina ion and ea ly de elopmen . The success ul comple ion o a ull seed- o-seed li e cycle o A abidopsis haliana and ice
aboa d he Chinese Space S a ion ep esen s a signi ican miles one in space ag icul u e [1].
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U ilizing he Gene al Biological Cul u e Module (GBCM), esea che s demons a ed ha app op ia e con ol o ligh ing, gas,
and wa e eco e y sys ems can suppo comple e plan de elopmen in space, he eby alida ing he easibili y o sus ainable c op
p oduc ion in mic og a i y. Pa allel e o s on Ea h ha e employed simula ed mic og a i y pla o ms, such as 3D clinos a s and
andom posi ioning machines, o eplica e aspec s o he space en i onmen . These g ound-based s udies ha e p o ided impo an
insigh s in o plan ge mina ion dynamics. Fo example, whea g ass (T i icum aes i um Linn) ge mina ed unde clinos a -induced
mic og a i y showed enhanced oo elonga ion, ele a ed an ioxidan ac i i y, and inc eased concen a ions o bioac i e
phy ochemicals compa ed o no mal g a i y con ols [2]. This inding sugges s ha mic og a i y may ac i a e s ess- esponse
pa hways o modi y me abolic p ocesses, he eby in luencing ge mina ion and ea ly g ow h.
Vigna adia a seedlings ha e also demons a ed al e ed mo phogenesis unde simula ed mic og a i y, including unusual
hypoco yl bending and ae ial oo o ma ion. These pheno ypes we e associa ed wi h ho monal shi s, pa icula ly ele a ed
gibbe ellic acid (GA3) and main ained indole-3-ace ic acid (IAA) le els, indica ing ha mic og a i y a ec s plan ho monal
balance and g a i opic signaling pa hways du ing ge mina ion [3]. Simila ly, Chlo ophy um comosum plan s subjec ed o
mic og a i y exhibi ed imp o ed benzene phy o emedia ion, likely due o enhanced s oma al opening in luenced by auxin
accumula ion, which could also a ec ge mina ion condi ions [7].
F om a cellula and molecula pe spec i e, esea ch on A abidopsis mu an s has iden i ied speci ic gene ic egula o s in ol ed
in he esponse o mic og a i y. The gene A PMEPCRA, a pec in me hyles e ase, was ound o be down egula ed in mic og a i y-
exposed seedlings, impac ing cell wall s uc u e and oo de elopmen . In e es ingly, epigene ic changes acqui ed du ing
space ligh pe sis ed in he F1 gene a ion, highligh ing po en ial ansgene a ional adap a ion mechanisms [6]. Ano he p o ocol
es ablished a quan i a i e me hod o e alua e oo g ow h unde clinos a condi ions using A abidopsis seedlings, con ibu ing o
he s anda diza ion o mic og a i y expe imen s [4].
Mo eo e , simula ed and eal mic og a i y we e shown o a ec wa e and nu ien up ake, which a e c i ical o seed
ge mina ion. In mic og a i y, oo s may no g ow in o he subs a e due o he lack o g a i a ional cues, leading o educed wa e
abso p ion, wil ing, and highe lea empe a u es [5]. These indings a e suppo ed by his o ical s udies whe e Nico iana abacum
and A abidopsis plan s success ully egene a ed and o med iable seeds unde simula ed mic og a i y, al hough wi h no iceable
di e ences in shoo and oo mo phology [8].
In es iga ions in o non-biological subs i u es o g a i y cues ha e also yielded in iguing esul s. Fo example, nonuni o m
magne ic ields we e used o o ien Linum usi a issimum seedlings in mic og a i y, e ealing ha magne ic o ce can mimic g a i y
by displacing s a oli hs and inducing opic esponses [9]. This sugges s al e na i e s a egies o di ec ing plan g ow h in space
habi a s. Au onomous plan g ow h sys ems, such as minia u ized incuba o s in CubeSa s, a e being de eloped o enable con olled
ge mina ion expe imen s in space [10]. These sys ems in eg a e senso s, ac ua o s, and p edic i e models o egula e en i onmen al
a iables and moni o plan ai s, o e ing compac pla o ms o mic og a i y esea ch.
Toge he , hese s udies unde sco e he complexi y o seed ge mina ion unde mic og a i y and he impo ance o physiological,
gene ic, and en i onmen al ac o s. They also emphasize he need o obus expe imen al p o ocols and echnological inno a ions
o ensu e plan iabili y in space missions.
3 METHODOLOGY
3.1 Simula ion o Mic og a i y
To simula e mic og a i y condi ions on Ea h, a h ee-dimensional (3D) clinos a o a andom posi ioning machine (RPM) was
used. These de ices unc ion by cons an ly al e ing he o ien a ion o he plan samples ela i e o he g a i y ec o , he eby
neu alizing he di ec ional pull o g a i y o e ime. The clinos a was se a o a ion speeds be ween 10 and 20 e olu ions pe
minu e ( pm), based on condi ions shown o induce physiological esponses in p e ious s udies [2]-[4].
3.2 Plan Ma e ial and P epa a ion
Seeds o a model plan species (e.g., A abidopsis haliana, T i icum aes i um, o Vigna adia a) we e su ace-s e ilized using
e hanol and sodium hypochlo i e and hen insed ho oughly wi h s e ile dis illed wa e . S e ilized seeds we e placed on solid
Mu ashige and Skoog (MS) medium supplemen ed wi h 1% suc ose and 0.8% aga in s e ile Pe i dishes o g ow h chambe s.
3.3 Expe imen al Design
Two g oups we e es ablished:
• Con ol G oup (1G): Seeds ge mina ed unde no mal Ea h g a i y condi ions in a s a iona y g ow h chambe .
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• Mic og a i y Simula ion G oup (μG): Seeds ge mina ed on he clinos a o RPM unde con inuous o a ion o up o
10 days.
Bo h g oups we e main ained unde iden ical en i onmen al condi ions:
• Tempe a u e: 22–25°C
• Ligh : 16 h ligh / 8 h da k pho ope iod
• Humidi y: 50–70% ela i e humidi y
Mul iple o a ion speeds (e.g., 5, 10, 15, and 20 pm) we e also es ed o obse e di e en ial e ec s o simula ed mic og a i y
in ensi y, as pe me hods used by Al-Awaida e al. [2].
3.4 Measu emen s and Obse a ions
A e he ge mina ion pe iod, he ollowing pa ame e s we e eco ded:
• Ge mina ion a e (%): The pe cen age o seeds ha success ully ge mina ed.
• Roo and shoo leng h (mm): Measu ed using ImageJ so wa e o digi al calipe s.
• F esh weigh (mg): Measu ed immedia ely a e ha es .
• Mo phological changes: Abno mali ies such as hypoco yl bending, ae ial oo s, o asymme ical g ow h pa e ns
we e documen ed pho og aphically.
• Ho monal analysis (op ional): Le els o gibbe ellic acid (GA3) and indole-3-ace ic acid (IAA) we e analyzed using
high-pe o mance liquid ch oma og aphy (HPLC) o enzyme-linked immunoso ben assay (ELISA), ollowing
p o ocols es ablished in p io esea ch [3][7].
3.5 S a is ical Analysis
All expe imen s we e conduc ed in iplica e. Da a we e analyzed using one-way analysis o a iance (ANOVA), ollowed by
Tukey’s pos -hoc es o compa e signi ican di e ences among ea men g oups. A p- alue o less han 0.05 was conside ed
s a is ically signi ican .
4 RESULTS AND DISCUSSION
4.1 Ge mina ion Ra es and Mo phological Changes
S udies consis en ly epo ha simula ed mic og a i y (μG) does no signi ican ly inhibi seed ge mina ion bu can al e he
a e and mo phology o ea ly de elopmen . Fo example, whea g ass ge mina ed unde clinos a condi ions showed enhanced oo
elonga ion, pa icula ly a highe o a ion speeds (up o 20 pm), when compa ed o seeds g own unde 1G [2]. Simila ly, Vigna
adia a exhibi ed unusual hypoco yl bending and ae ial oo g ow h unde μG, indica ing ha g a i y-independen signaling
pa hways we e ac i a ed du ing ge mina ion [3].
O he species, such as A abidopsis haliana, main ained ela i ely no mal ge mina ion unde simula ed mic og a i y, hough
oo g ow h o ien a ion and elonga ion we e a ec ed [4][6]. In some cases, educed oo pene a ion in o he subs a e was obse ed
due o he absence o g a i opic signals, necessi a ing specialized wa e ing sys ems in eal mic og a i y en i onmen s [5].
4.2 Ho monal Regula ion
Al e a ions in plan ho mone le els unde simula ed mic og a i y ha e been highligh ed as a key ac o in luencing ge mina ion
and ea ly g ow h. Fo ins ance, unde μG, Vigna adia a showed inc eased le els o gibbe ellic acid (GA3), which is associa ed
wi h seed ge mina ion and cell elonga ion [3]. In ano he s udy, Chlo ophy um comosum exhibi ed inc eased shoo indole-3-ace ic
acid (IAA) con en , con ibu ing o enhanced s oma al opening and g ea e gas exchange [7]. These ho monal shi s a e belie ed
o help plan s compensa e o he lack o g a i a ional o ien a ion by modula ing in e nal g ow h egula o s.
4.3 Physiological and Biochemical Adap a ions
Mic og a i y condi ions ha e also been shown o igge biochemical adap a ions in ge mina ing plan s. Fo example,
whea g ass ge mina ed unde μG demons a ed highe an ioxidan ac i i y, including ele a ed le els o hyd ogen pe oxide, ni ic
oxide, and DPPH sca enging compounds. The μG- ea ed plan s also showed g ea e accumula ion o bioac i e phy ochemicals
such as apigenin and ocophe ol [2], sugges ing a s ess-induced enhancemen o seconda y me abolism du ing ea ly g ow h. In
addi ion, some s udies iden i ied changes in cell wall emodeling and gene exp ession unde μG. Fo ins ance, he gene
A PMEPCRA, esponsible o encoding pec in me hyles e ase, was down egula ed in A abidopsis unde mic og a i y, a ec ing
cell wall lexibili y and po en ially oo eme gence [6]. Rema kably, hese gene exp ession changes we e inhe i ed by he nex
gene a ion o seeds, implying a ansgene a ional adap a ion o mic og a i y.
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4.4 Implica ions o Space Ag icul u e
The abili y o se e al plan species o ge mina e and e en comple e ull li e cycles in eal mic og a i y en i onmen s—such
as hose on he Chinese Space S a ion and In e na ional Space S a ion—demons a es he po en ial o plan -based bio egene a i e
li e suppo sys ems (BLSS) [1][11][12]. Howe e , hese s udies also e eal a need o op imized sys ems ha accoun o al e ed
wa e up ake, oo ancho age, and ho mone signaling unde mic og a i y. Minia u ized incuba o s, such as hose designed o
CubeSa missions, o e compac and au onomous solu ions o plan ge mina ion s udies in space. These sys ems can egula e
en i onmen al pa ame e s and measu e plan ai s in eal- ime, con ibu ing o imp o ed modeling and p edic abili y o plan
beha io unde μG [10]. Ge mina ion unde simula ed mic og a i y is no only easible bu may also enhance ce ain ai s in
speci ic plan species. Howe e , he unde lying mechanisms a e complex and a y ac oss species, sugges ing ha ailo ed
cul i a ion sys ems and gene ic sc eening may be equi ed o op imize space-based ag icul u e.
5 CONCLUSIONS
Unde s anding he e ec s o mic og a i y on plan ge mina ion is essen ial o he ad ancemen o space ag icul u e and he
de elopmen o sus ainable li e-suppo sys ems o u u e space missions. The e iewed s udies indica e ha while seed
ge mina ion can occu unde simula ed o eal mic og a i y, he absence o g a i y signi ican ly al e s ea ly plan de elopmen .
Mo phological changes such as al e ed oo o ien a ion, hypoco yl bending, and ae ial oo eme gence a e commonly obse ed,
e lec ing a dis up ion in he plan ’s no mal g a i opic esponse.
Physiological adap a ions, including ele a ed le els o g ow h- egula ing ho mones like gibbe ellic acid and indole-3-ace ic
acid, sugges ha plan s compensa e o g a i a ional loss by adjus ing in e nal biochemical pa hways. Mo eo e , simula ed
mic og a i y appea s o enhance he p oduc ion o ce ain bioac i e compounds in some species, o e ing insigh s in o s ess-
induced seconda y me abolism. Gene ic and epigene ic changes, such as he down egula ion o key cell wall-modi ying genes,
highligh he dep h o mic og a i y’s in luence on plan sys ems, including po en ial ansgene a ional e ec s.
The success ul seed- o-seed cul i a ion o plan s in o bi al pla o ms and he ongoing de elopmen o compac , au onomous
g ow h chambe s emphasize ha con olled ge mina ion and g ow h in space is achie able. Howe e , a iabili y among species
and g ow h condi ions unde sco es he need o con inued esea ch o op imize plan sys ems o ex a e es ial en i onmen s.
Fu u e wo k should ocus on iden i ying obus plan geno ypes, e ining mic og a i y simula ion echniques, and in eg a ing eal-
ime moni o ing sys ems o be e unde s and and suppo plan li e beyond Ea h.
FUNDING INFORMATION
This esea ch ecei ed no speci ic g an om any unding agency in he public, comme cial, o no - o -p o i sec o s.
ETHICS STATEMENT
This s udy did no in ol e human o animal subjec s and, he e o e, did no equi e e hical app o al.
STATEMENT OF CONFLICT OF INTERESTS
The au ho s decla e no con lic s o in e es ela ed o his s udy.
LICENSING
This wo k is licensed unde a C ea i e Commons A ibu ion 4.0 In e na ional License.
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